On Tuesday, June 23, 2026, Okinawa Prefecture will observe its 81st Memorial Day (Irei no Hi). One year after the 80th anniversary memorial of the end of WWII held in 2025, the Okinawa All War Dead Memorial Ceremony is again scheduled to take place at the Peace Memorial Park in Mabuni, Itoman City. This article examines how this prefecture-specific holiday — established by ordinance — shapes hotel demand centered on school trip groups arriving from outside Okinawa, drawing on public price data from MetroEngines Research (メトロエンジンリサーチ). Focusing on three cities — Itoman, Naha, and Nanjo — we read daily ADR and sold-out rates for June 20-25 against the May school-trip peak.

The Unique Demand Structure of Memorial Day

Memorial Day traces back to a 1961 act of the Legislature of the Government of the Ryukyu Islands (“Act on Public Holidays”) and is currently a prefecture-specific holiday under Okinawa Prefectural Ordinance. Nearly all public institutions in the prefecture — the Okinawa Prefectural Government, municipal offices, prefectural high schools, prefectural hospitals — suspend operations on this day. At the Peace Memorial Park in Mabuni, Itoman City, the Okinawa All War Dead Memorial Ceremony is held, and from evening into night a related event projects pure-white searchlights into the sky as “Pillars of Peace Light.”

From a demand-structure standpoint, what matters is that Memorial Day is not a national holiday. Mainland-origin tourism and business demand moves like an ordinary weekday, while in-prefecture utilization drops sharply. Furthermore, June falls before the mainland’s rainy season ends and sits in the low season ahead of summer break (late July onward). And yet this same month forms the second-largest annual peak for school trip arrivals into Okinawa Prefecture. The Okinawa Prefectural Tourism Policy Division’s “Survey of School Trip Arrivals (Calendar Year Reiwa 6 / 2024),” published in December 2025, shows that school trips concentrate in May-June and October-December, with June alone hosting many junior-high and high-school groups from major mainland cities.

In other words, Memorial Day week is a uniquely structured period in which three forces operate simultaneously: (1) early-booking absorption by mainland-origin school trip groups, (2) a structural drop in resident utilization, and (3) group lodging demand framed by peace-education programs rather than ordinary tourism.

Lodging Supply Capacity in the Three Cities

We organize the supply scale tracked by MetroEngines Research across three cities: Itoman City, where the memorial ceremony is held; Naha City, the principal lodging base for out-of-prefecture groups; and Nanjo City, located in the same southern area.

Source: Compiled by HotelBank Editorial Team from MetroEngines Research

Naha City has overwhelmingly the largest supply at 16,574 rooms, while Itoman has 611 rooms and Nanjo just 211 rooms — both small in scale. To accommodate an out-of-prefecture school trip group (averaging roughly 133 students per junior-high school and 193 per high school) at a single property, mid-size business hotels in Naha (80-250 rooms) are the realistic choice. Naha has 63 properties / 9,337 rooms in this size band, forming the core absorber of out-of-prefecture group demand.

Source: Compiled by HotelBank Editorial Team from MetroEngines Research

Lodging supply across the three southern cities is complementary: Naha’s mid-size business-hotel cluster carries out-of-prefecture group intake, while Itoman and Nanjo are anchored by resort-type and small ryokan properties. There is effectively only one mid-size property in Itoman City suitable for group accommodation near the Mabuni memorial ceremony — Southern Beach Hotel & Resort Okinawa (サザンビーチホテル&リゾート沖縄), 448 rooms — meaning that even tour itineraries that include attendance at the memorial ceremony face a structural constraint of basing in Naha City for lodging.

Source: Compiled by HotelBank Editorial Team from MetroEngines Research (circle size proportional to room count)

Daily ADR & Sold-out Rate: June 20-25 vs. the May School-Trip Peak

We aggregated daily ADR and sold-out rates by city for June 19-26, 2026 — the week surrounding Memorial Day (June 23).

Source: Compiled by HotelBank Editorial Team from MetroEngines Research

Looking at Naha’s daily ADR, prices rise from ¥28,300 on Friday June 19 to ¥30,900 on Saturday June 20, then trade in a ¥24,600-¥25,500 range across the three weekdays of Monday June 22 through Wednesday June 24. On Memorial Day itself (Tuesday June 23) ADR is ¥25,500 — no notable spike compared with the surrounding weekdays. The sold-out rate of 27.6% is also average for the week.

Meanwhile, Naha’s average ADR for May 10-30 (the school-trip peak) was ¥23,500 with a sold-out rate of 31.7%. Versus Memorial Day week’s average ADR of ¥26,900 (+14.3%), prices are higher in June but sold-out rates a touch lower. This reflects the structure of June being a rainy-season month where individual leisure demand cools while group demand provides the floor. For broader summer booking timing in Okinawa and comparisons with Hokkaido and Kyoto, see our detailed analysis in Summer 2026 Hotel Price Comparison: Okinawa, Hokkaido, and Kyoto.

Source: Compiled by HotelBank Editorial Team from MetroEngines Research

Itoman City trades through the week in a high-rate band of ¥53,000-¥64,800, with sold-out rates of 26-31% on par with Naha. Because most of the supply is held by Southern Beach Hotel & Resort Okinawa (448 rooms), the resort rate pulls up the area average. Nanjo City swings between ¥41,000 and ¥50,400 within the week, with sold-out rates of 8-17%, lower than Naha and Itoman.

Year-over-Year ADR Change

We compared 2025 and 2026 ADR across the three days surrounding Memorial Day (June 22-24).

Source: Compiled by HotelBank Editorial Team from MetroEngines Research

Source: Compiled by HotelBank Editorial Team from MetroEngines Research

Compared with 2025 — the 80th-anniversary memorial year — June 22-24, 2026 posts double-digit increases in public-price terms across all three cities. Most notable is Nanjo City at +24.5% YoY (and +31.7% YoY for the single day of June 23), the largest gain. Because the supply side is small in scale, even modest group demand readily moves the unit price — a clear reflection of that structure. Naha’s +14.1% likely combines inventory absorption from school-trip group bookings with a recovery in mainland individual-traveler demand.

Origins of Mainland School Trips to Okinawa

The Okinawa Prefectural Tourism Policy Division reports that calendar-year Reiwa 6 (2024) school-trip arrivals reached 2,049 schools / 351,937 students, recovering to 86.0% of the pre-COVID Reiwa 1 (2019) figure of 409,011. By origin, Osaka Prefecture (大阪府) led both schools and students, followed by Tokyo (東京都). By school type, high schools accounted for 66.9% and junior-high schools 31.4%, together comprising 98.3% of the total.

Source: Compiled from “Okinawa Prefectural Tourism Policy Division — Survey of School Trip Arrivals (Calendar Year Reiwa 6)”

By month, May-June and October-December show clear concentration, with June forming the spring secondary peak following May. This reflects two overlapping factors: the academic calendars of mainland junior-high and high schools tend to favor mid- to late-June for school trips ahead of term-end exams, and air fares between Naha Airport and major mainland airports remain below summer-peak levels at this timing. The fourth week of June — which contains Memorial Day — has long been actively pitched by mainland travel agencies as a window in which peace-education content fits naturally into the itinerary. For the autumn school-trip peak’s overlap with consecutive-holiday demand, see our resort-market analysis in Silver Week 2026 — First in 11 Years: 9-Day Streak Reignites Autumn Resort Demand.

A Two-Front Demand Picture: Early-Booking Absorption vs. Resident Demand Drop

The Memorial Day-week lodging-demand structure across Naha and Itoman can be organized around two forces operating in parallel.

Two opposing movements occur simultaneously: school trips locked at group rates 6-12 months in advance, and same-day resident demand evaporating. The sold-out rates visible in OTA public-price data (27-33% in Naha for June 22-24) cannot directly visualize inventory absorption from group bookings (groups typically reserve via travel-agency direct channels rather than OTAs), but if Naha mid-size business hotels show shrinkage in available plan counts versus other weekdays, the presence of group blocks can be inferred indirectly.

Revenue Opportunities for Hotel Operators

For Memorial Day week in Naha, the revenue-maximization question is how to sell the residual inventory after group blocks are confirmed. The +14-18% YoY uplift in public prices suggests a degree of recovery in mainland individual-traveler demand, and layering staged pricing on top of this opens the door to further revenue expansion. For mainland-city business-demand recovery generally, see weekday-base ADR trends visualized in Weekday ADR Analysis: Tokyo, Nagoya, Osaka, Fukuoka — Visualizing Business Demand Recovery.

Three concrete upside directions stand out. First, there is room to capture lodging demand from mainland attendees, journalists, and stakeholders accompanying the memorial ceremony through sales channels separate from peace-education group blocks. Second, from the day after Memorial Day (Wednesday June 24), groups depart and inventory frees up — creating potential to design pricing for last-minute mainland individual leisure demand. Third, given the capacity limits in Itoman, the share of memorial attendees lodging in Naha is structurally high; mid-size hotels in southern Naha (the Asahibashi / Kencho-mae area) therefore retain headroom for premium pricing leveraging that locational advantage.

Summary: Memorial Day Week in Southern Okinawa is a Two-Layer Market of “Group + Individual” Demand

The lodging supply-demand picture across the three southern Okinawa cities — Naha, Itoman, and Nanjo — during the week of Memorial Day, June 23, 2026, layers three elements: (1) a steady +10-25% YoY rise in public prices, (2) intake of out-of-prefecture school trips centered on Naha’s 63 mid-size business hotels with 9,337 rooms, and (3) a dual drag on resident demand from rainy season and a prefecture-ordinance holiday. The continuity of peace-education demand carried over from the 2025 80th-anniversary memorial is also traceable through the recovery of mainland-origin school trips to 2,049 schools / 350,000 students in Reiwa 6.

From a hotel-operations standpoint, the revenue opportunity unique to Memorial Day week is how to bring in mainland individual demand and memorial-ceremony-related demand around the inventory locked by group blocks, using staged pricing. Itoman and Nanjo, with their constrained supply, see small group volumes move unit prices significantly, while Naha’s abundant supply leaves wider scope for fine-grained segment-level pricing. The unique demand structure created by an Okinawa-specific ordinance holiday is a valuable revenue-management case study observable only once a year.

External References

• Okinawa Prefecture: “Survey of School Trip Arrivals”
• Okinawa Prefecture: “80th Anniversary Peace Memorial Special Page”
• Okinawa School Trip Navi

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