Hello, just to piggy back off the other information I wanted to add that the staff at the First Aid areas are so nice! I have a disabled brother, and they had a cot for him to rest (and be changed) and also offered him juice and water and the air conditioning felt so good (this was in May).
I am sure you will have a great time!
Be sure to get your Mom on Soarin' at Epcot, my Mom got on and I thought she was a kid!
Enjoy!