We are taking our Great Aunt to Disney. She is 91 and can walk "ok" with a walker at home but for Disney we plan to use a wheelchair at the parks. Her wheelchair is not very reliable so the Senior Center we go to gave us a very nice transfer chair to use. They said it would be very safe and in fact easier for us to push. Her PT also said the transfer chair would be great for the parks because it is so light weight. Will we have any problems using such a chair on any of the rides that allow wheelchairs or on the Disney buses (it will be safer for her to stay in her chair during all transports.) Also, does anyone have any suggestions for the caretakers pushing ... I have been practicing with the new chair and noticed that my hands and wrists get a bit sore even after just a mile or two.