I want to buy a wheelchair for me for when I do go to disney. This past trip we had to cut it short because I just could not walk anymore. Anyway I was looking at walmart.com and they offer some that are 18" and hold up to 250 pounds. I am about 215. I did use the transport wheelchairs that were in the handicap area at mk parking lot and they seemed wide enough. Does anyone know who wide those wheelchairs are and if 18" is ok.