I have been disabled for 10 years and have had a 3 wheel Lark(no longer manufactured) , Jazzy powerchair, and now a 3 wheel "Travel Scoot". The 3 wheel manuvers a lot easier than 4 wheel, they turn on a dime. I researched sizes because of the lifts on early disney buses would not fit over 44" long, my lark 3 wheel was 42" & it weights only 160 pounds. The new buses lean over so most of the time that is not revelant anymore. I have a spinal cord injury so comfort can be an issue, I'm 6' 1" an my legs and back kill me, the 3 wheel lets me stretch my legs and not feel traped as on 4 wheel. You may have issues about transfering to rides having to leave it then walking some distance or transfering to a wheelchair, I an a large man and the wheel chairs are always too small. I opted for powerchair my last several trips but still have to transfer at Pirates, and some others. The CMs are not consistent about this from visit to visit. Some just don't have a clue. I just bought a Travel Scoot, saw it in epcot last year, its lightweight (under 50#) its like riding a tricyle, check out TravelScoot.com , you may be could use one. I hope this helps