Tokyo DisneySea is a theme park at the Tokyo Disney Resort located in Urayasu, Chiba Prefecture, Japan, just next to Tokyo. It opened on 4 September 2001. The Oriental Land Company owns the park, and licenses intellectual property from The Walt Disney Company

You can book your ticket online and you can choose from multiple package, with hotel room or without and more.

https://reserve.tokyodisneyresort.jp/en/ticket/search/?route=1