Hi Jessica,
Your children are both at a wonderful age to explore Walt Disney World! I remember taking my daughter to Walt Disney World when she was a toddler, and watching the joy on her face as she ran around exploring was truly magical.
Do check out the planning page for
visiting Walt Disney World with preschoolers. I also like to direct guests with young visitors to the
Disney Parks Blog post on height requirements for attractions at Walt Disney World. This post shows that there are many rides without height requirements that your toddler can enjoy! From classics such as Dumbo the Flying Elephant and Peter Pan's Flight in Fantasyland at Magic Kingdom, to seeing amazing animals at Disney's Animal Kingdom on Kilimanjaro Safaris, there is so much available for your little one to do!
If you do find that there are experiences that the adults in your party as well as your daughter may want to experience that are not appropriate for your son, consider using
Disney's Rider Switch Service. This service will allow you to trade adults staying with your toddler while still allowing each adult a turn to experience the more thrilling attraction.
Finally, take advantage of the
Baby Care Centers. Located at each of the four theme parks, the Baby Care Centers offer a relaxing setting to feed or change your little one, or just a quiet place to take a break if your son needs one.
I would love to help you plan more Jessica; however, I am limited in the space that I have to answer. Please do let us know if you have any further questions!