[Grand Nikko Tokyo Daiba] Summer Plans including "Chillout with MAISON MUMM" to go on sale from June 25, 2026

Grand Nikko Tokyo Daiba, offering moments to 'Enjoy and Relax in Tokyo' (Address: Minato-ku, Tokyo; General Manager: Tadahasu Tsukada), will begin accepting reservations on June 25 (Thu) for various plans related to the 'Grand Blue' terrace pool, which will be open from July 11 (Sat) to August 31 (Mon), 2026. Following last year's success, the 'Chillout with MAISON MUMM' will be held again this year. Additionally, exclusive plans such as popular night-time admission accommodation plans and restaurant & pool plans have been prepared.

The 'Grand Blue' terrace pool is a facility where guests can enjoy panoramic views of Tokyo in an open-air setting, away from the hustle and bustle of the city.

Once again this year, the 'Chillout with MAISON MUMM' event will be held in collaboration with 'MAISON MUMM,' a leading French champagne house. Guests will be served one full bottle of 'Mumm Cordon Rouge,' along with special appetizers and a free-flow of 24 types of drinks. Guests can enjoy an elegant time with champagne in a private cabana by the poolside.

A variety of restaurant & pool plans will also be available for the summer. Whether for outings with friends, girls' night outs, or luxury stays, guests can enjoy these according to the scene.

[Overview of Terrace Pool 'Grand Blue'] - Sales Start: June 25, 2026 (Thu) - Business Period: July 11, 2026 (Sat) – August 31, 2026 (Mon) - Operating Hours: Daytime 10:00-16:00 (Last entry 15:00), Night-time 17:00-21:00 (Last entry 20:00) - Location: Grand Nikko Tokyo Daiba, Atrium Building, 4th floor

[Important Notes] - Reservations are strictly required, and sessions are fully replaced. - Night-time sessions are limited to those 16 and older. - Business may be suspended due to bad weather or other circumstances.