I didn't realize that using disability accommodations to get a single was so common. I used the fact that I was blind to get a single in the early 2000's. It may not have been strictly necessary, but I justified it by the fact I had an incredibly loud braille printer that took up a bunch of space. I didn't try to stack accommodations though, since I could walk as well as anyone else I didn't get preferential treatment when it came to location.