You may have better luck over on the disabilities section. Are you wanting to rent from the parks? Or an outside agency? If you think you will need one, I recommend an off site agency (I really like Buena Vista) for several reasons 1) it's much cheaper to rent for several days (2 days is $60 from an off site and $100 through Disney) 2) the Disney EVCs are soooooo slow (they slowed them down) and they feel like you could crawl faster 3) you have the
scooter for the resort, Disney Springs, and ease of getting around so 4) it saves you time and anxiety of getting one from Disney each day and worrying if they will have them.