Hi Eileen,
I think you will find the Walt Disney World Resorts very accomodating to your children. Disney wants to make sure that all of their guests enjoy their vacation.
My daughter has Asperger's and has enjoyed over 15 vacations at the Walt Disney World Resorts. As long as we stick to our schedule and give her transition time, she usually does fine without any accomodations.
However, every child is different so you may need additional accomodations to help you manage your vacation. You can ask for a Guest Assistance Card (GAC). This card is available at Guest Relations at any of the four major parks and is issued for the length of your vacation. It will note what accomodation(s) your child may need including shorter wait times for attractions or seating accomodations.
To use the GAC, simply approach the cast member at an attraction you would like to experience and show the cast member the card. The cast member will instruct you from there as every attraction is slightly different.
You can also call your resort and ask for a special room if you need it. Finally, ask the cast members in the park for quiet places to rest or viewing areas for parades and fireworks.
If you need help with a special diet, ask your server for suggestions or have it noted in your Advance Dining Reservations (ADRs).
Here is a
link to other services available for guests with special needs.
Wishing you a magical vacation!
Beth