Hi Jenny,
Welcome back to the Disney Parks Moms Panel! How exciting to be planning your first trip to the Walt Disney World Resort.
First, I suggest that you review the
Planning for Pre-School Kids and Little Ones Guide. It provides a more comprehensive list of rides and attractions. Having said that, I will give you some suggestions based on my experience with our girls!
At Magic Kingdom, I suggest Dumbo the Flying Elephant, the Magic Carpets of Aladdin, Peter Pan's Flight, Tomorrowland Speedway and the Mad Tea Party. For your adventurous son, I suggest the Seven Dwarfs Mine Train, Barnstormer, Big Thunder Mountain Railroad, and Splash Mountain. Remember also that you can visit Cinderella and Elena or Rapunzel and Tiana at Princess Fairytale Hall.
At Epcot, I recommend Soarin' but your daughter might not be quite tall enough by the time of your visit! She could ride Living with the Land and Frozen Ever After. Your son might love Test Track, and Mission Space (easy level). On our first visit with our girls, one of them just barely was 40 inches tall and she jumped with joy when the cast member checking heights gave her the thumbs up to ride Soarin'!
No Fast Pass+ needed - At Disney's Hollywood Studios, your son may join a cadre of new recruits in
Jedi Training - Trials of the Temple. Once the park opens, walk (maybe run) to the sign-up location at the Indiana Jones Adventure Outpost. I also suggest that you use a Fast Pass+ for Toy Story Mania!
Animal Kingdom has two must-do attractions - Kilimanjaro Safaris and The Festival of the Lion King Show. Your son might enjoy Expedition Everest - Legend of the Forbidden Mountain and DINOSAUR.
Happy Planning!
-Donyell