Currently, you can only buy tickets for Tokyo Disney Resort ONLINE.
Pick a day and time you want to go to the Tokyo DisneySea Resort and purchase on their website.
Be sure to download the Tokyo Disney app; you'll need it for your day(s) in the park.
Tokyo Disney Resort was built in a little bit of an isolated area.
It's really fun to stay there overnight because you can see some of the Disney icons lit up at night.
But know you'll pay a premium for staying nearby.