Guest Assistance Pass (gap)
Also I would highly reccomend that if you or somebody in your group needs extra help getting on and off rides of any kind that they get a GUEST ASSISTANCE PASS (GAP)
The GAP along with Disney's Guidebooks (there is one for each park) for guests with disabilites will clearly explain what rides/attractions have special services for guest with disabilities and/or any other challenge.
Also you dont need a doctor's note to get a GAP but I highly reccomend also carrying the note to show Guest Services that you need a GAP and God forbid that you or your loved one needs hospital care while you are in Orlando the letter can clearly explain to ER doctors what is going on and what kind of care you are getting back at home.
Any questions about the GAP just ask :)
KD <>< :)