I have CMT also. It’s not too often I hear of someone else who has it or even heard of it. I used a ECV at WDW for years. The 1st one I owned had a lever on the steering bar that was controlled by your thumb. My hand would get very tired & weak. The 2nd one I owned, the level was operated by your fingers which was much less tiring since you used all 4 fingers. After my condition worsened to the point that I needed to use the
scooter inside restaurants, shops & restrooms, I started taking my power chair to WDW. A power chair is easier to maneuver than even the smallest ECV. I had already been using one at home after I couldn’t manage a walker any longer so I was experienced with it. After you get comfortable with the joystick control, it is much easier & less tiring. You can grasp the joystick with your whole hand & control movement in all directions very easily. You still need to turn the speed down in crowds or tight spaces. Since the joystick can easily be bumped by you or people around you, it’s a good idea to turn the power off anytime you’re stopped.
The only problem is you can’t find many places to rent power chairs. I have the Golden LiteRider Envy. It breaks down for easier loading...at least my husband has no problem loading it. I wish I had just started out with a power chair instead of an ECV but years ago I don’t think there were any power chairs that were affordable. That’s changed a little.
I hope I’ve helped you. I think anyone who can drive a car should be able to manage an ECV with rest breaks. By the end of the week the thumb control made my whole arm hurt. If I went with the ECV instead of a power chair, I’d make sure it was one with finger controlled lever.