Hi Stephanie,
I absolutely love both of these hotels especially for the little ones.
Disney's Pop Century Hotel is geared toward popular icons of the 20th Century. The iconic figures such as the Big Wheel, the Computer, and Play-Doh are larger than life and extremely fun for the smallest on-lookers. Of course, they will know these icons because they see them in everyday life, but their eyes may not stay as wide for long. However, if your kids are true Disney fans and love the classic movies like Lady and the Tramp, 101 Dalmatians and Toy Story then
Disney's All Star Movies Resort is the choice for you. The characters from the classic movies are enough to make you say "awww" when you see them.
Andy's room from Toy Story is the coolest, and the 101 Dalmatians building is so cute that the kids and big kids (adults) marvel as they look way up at the characters. I suggest that you allow the kids to watch a couple of the movies right before you go to
Walt Disney World, so that the movies and characters will be fresh in their minds when they see them at the hotel.
Both hotels are wonderful and have a lot of things for the kids to enjoy. I hope I have helped.