We've been planing our visit (10 days) for months, and now my wife has injured her ankle! The thing got as big as two softballs in less than an hour. X-rays say nothing broken. The MD says strained ligaments and for her to stay off of it for a while. We leave on July 1. I've heard that you can rent wheel chairs at WDW (how much??), but do you have to have 'documentation' of injury? How do wheel chairs work with the lines/queues? MORE importantly, how do I convince her to actually USE a wheel chair? I know she'll come around after it begins hurting and swelling, but I'd rather her not have to go through the pain. She just doesn't like calling attention to herself! We've been married for 23 years. You'd think I'd be able to convince her by now, wouldn't you? 

I say this from personal experience. I was playing in the state championship tourney in soccer when I was in High School, and rolled my ankle over in the semi-finals. I knew that when I took my cleat off my foot would swell up instantly, so I didn't take it off. I showered in it and slept in it, and played the next day. I just wish we would've won. 