Hi Amy,
Welcome back to the Disney Parks Moms Panel! Clearly, you are doing some amazing planning for your first trip to the Walt Disney World Resort!
Given your options, I would visit Magic Kingdom twice. My family always does at least two days at Magic Kingdom because it has so many attractions and character experiences. Having said that, expeditions on
Pandora - The World of Avatar are breathtaking. One of our favorite experiences is riding on the back of an ikran on
Avatar Flight of Passage. We also always ride Expedition Everest - Legend of the Forbidden Mountain and Kilimanjaro Safaris. Our girls adore the animals and, on one of our visits last year, we did the Caring for Giants tour to learn more about the elephants.
With the ages of your kids, be sure to check the height requirements using the
attractions list. Although your little ones may not be able to ride Avatar Flight of Passage or Expedition Everest - Legend of the Forbidden Mountain, there are a number of other attractions, character experiences and shows they may enjoy at Disney's Animal Kingdom. We love The Festival of the Lion King show and, when our girls were younger, they had a blast in
The Boneyard. Na'vi River Journey on Pandora - The World of Avatar would also be a great option for them!
Amy, whatever your decision, I trust you will have a fabulous time on this first magical trip!
Magic, memories and Minnie Mouse hugs,
Donyell