Hi Kimberly,
Greetings from a fellow Hoosier! How exciting that you'll be surprising your kiddos with a trip to the most magical place on earth! They are going to LOVE it!
While a visit to the Walt Disney World Resort is FULL of magic and fun, Mouseketeers who struggle with sensory processing may need some help to be able to fully enjoy it, and I'm happy to share what has worked for my son. First, we always pack a sensory brush, fidget toys, snacks, and headphones to help him in case he's feeling overstimulated. We also take little breaks in restaurants (outside of peak mealtimes), retail shops, and quiet spots throughout the parks. At Magic Kingdom Park, there are some quiet spots between Splash Mountain and Golden Oak Outpost or off to the right of Space Mountain. At Disney's Hollywood Studios, we often find the area around Echo Lake to be rather peaceful, and at Disney's Animal Kingdom, there are some quiet nooks and crannies near DINOSAUR.
This wonderful guide has some additional suggestions on pages 29 - 31. Sometimes, our little guy needs a chance to run and play, and Tom Sawyer Island at Magic Kingdom Park or The Boneyard at Disney's Animal Kingdom are really great for letting him move. Of course, if you'd like to head back to your Resort hotel for a rest or swim in the middle of the day, you're welcome to do that! Your ticket will allow you to come and go as you please from the theme park, and if you have the Park Hopper Option ticket, you may even switch theme parks. And lastly, don't forget that Cast Members are amazing resources, so feel free to ask any of them for assistance along the way!
Thanks so much for bringing me your great question, Kimberly, and please let me know if you have any other questions as you're planning your trip! I hope that you have a truly magical vacation!
Missy