This isn't a very good picture, but this page does have a picture of the Space Mountain ride that shows the restraint.
One of the differences between the car in Space Mountain and Star Tours is that the seat in Star Tours has a higher back and more support.
Another thing that might make a difference is that in Space Mountain, you are on a track that moves thru space. In some places, you may be quite close to other tracks. You would not hit, but I think it would be quite scary if you have movements that cause your arms to move out away from your body.
We rode all the roller coasters while at WDW earlier this month. I don't know anything about your medical condition, but I will say I noticed that Space Mountain is a lot "bumpier" than the others.
Save Up to 30% on Rooms at Walt Disney World!
Save up to 30% on rooms at select Disney Resorts Collection hotels when you stay 5 consecutive nights or longer in late summer and early fall. Plus, enjoy other savings for shorter stays.This offer is valid for stays most nights from August 1 to October 11, 2025.
CLICK HERE