So - a quick blurb for those that weren't able to see the livestream. First, this event WILL be like Incredibles and NBC (I was wrong - guess they're not doing Thunderclap anymore). There will be two premium characters - Olaf and Sven. There will be two concession items. Costumes for Mickey and Miney that you can only get during the event (Mickey's is required, Minnie's is not). To get the common token you have to capture the little Snowgies (spelling?). Other characters are Anna, Elsa, Krisoff and the baddie is Hans. Only one very small bit of land will be open, one of the areas by Space Mountain. It has a lot of curved areas, so I wouldn't be surprised if it allows just one attraction to be placed there. They are still optimizing the game.
Edit - sorry Quellman, didn't see you posted much of this already.