As stated in the “Regulations for Visitors Concerning Prohibited Items and Activities” on the Association's website, glass bottles, cans, and other beverages in are prohibited, however the use of refillable bottles is encouraged. Plastic bottles are also acceptable.

https://www.expo2025.or.jp/en/wp-content/uploads/sites/2/2024/04/ENG-240408-Rules-and-Regulations-for-Visitors-Regarding-Prohibited-Items-and-Activities-1.pdf