Tokyo Disneyland and Tokyo DisneySea are both part of the Kingdom of Magic and Dreams that's operated by the Tokyo Disney Resort. If you're planning on visiting Disney -- either by land or by sea -- budget a lot of time because there is a lot to do. Your Disneyland visit can be arranged by theme -- a visit to Toontown, Critter Country -- or by a specific type of attraction (types include "areas for small children," "high-speed, thrilling attractions," and "live indoor entertainment").
DisneySea is arranged in the same manner as the land version, with activities organized around various coasts and harbors, or by a category search of the type of attraction you're looking for. The five hotels at the Disney resort each offer world-class accommodations.
URL: http://www.tokyodisneyresort.co.jp/tdr/english/about/index.html