Oh wow!!!! It's here!!!!!
Oh, Shelly, it's going to be brilliant! And when you tell the kids it will be so sweet!
Shelly... if you are staying on-site then be sure to visit the Disney Jr Dance Party in Hollywood Studios with your EMH night. The kids will love it and it has better characters than the Tomorrowland Dance Party!
Oh yes, so long as it's not a show at set times, if you are in line, you get to ride it. Even if the park has closed. They cut the queue at park closing and then empty it before doing their closing down procedures for the night.