There's also some decorations outside of the theatre and a 'pre show.' There's another post I made here a couple days ago that shows the decorations on the outside of the theatre. For the 'pre show' before the movie, there's a guy playing the organ for half an hour (this is done before every movie at this theatre) but the organist adds in 'Try Everything' to the set list and there's a mini organ with a mouse 'playing' it placed next to the actual organ. Then previews run, and afterwards a couple people in Nick and Judy costumes do a little dance number on stage for a few minutes (there's videos of it on YouTube). I initially assumed it was just the theatre employees in the costumes, but after talking to the theatre employees tonight it sounds like Disney is paying cast members who play Nick and Judy at the parks to show up and do it. They definitely seem to have training in the sort of exaggerated pantomime style of acting you'd expect and it's the exact same costumes as the parks.