I have to second the thought about getting a wheel chair that has a leg that can be elavated. Your going to want to elavate a broken foot. We have used walker mobility, and they do have an option to pay extra to get a leg that elavates. You have to request specifically and tell them which leg it is.
I recommend you get a wheel chair from offsite so you have the chair for the resort. SSR is very large, we were just there, and have been there 3 times now. It would be super hard for him to get around the resort w/out a wheelchair, it is spread out.
If you are DVC I would call and ask to be placed near artist palate, the pool, etc. area. Even w/ a push chair it will take a lot of work to get around. I would recommend staying in the grandstand area and request the building closest to the carriage house/artist palate/main pool/check-in. Another option would be to request the springs area. We were in congress park, the closest building to the main stuff, but a long
ecv ride. It was fine for me, but too much for mom.
A couple other thoughts about making the trip more comfortable. Bring one of those refillable ice packs, ice often. Ice first thing in the morning even if your not in pain, and at night before bed, at the minimum. You can get the refillable ice packs at large grocery stores. Then you can easily refill it at counter service locations. Just ask for a large cup of ice and tell them what its for, so they fill it up all the way with ice. They are better than just plain old zip lock bags, last longer and don't leak as much.
http://www.return2fitness.net/Cold_therapy/Cold_Packs_And_Wraps/md200icebag-mandl
Here is a link to what they look like, don't know anything about the website listed, a local pharmacy, grocery store should have them.
If you forget your ice pack, the first aid stations can give you a disposable one. Works in a pinch when things swell up unexpectedly, they don't last that long.
Make sure to bring you pain pills. nsaids, tylenol, or asprin with you into the park. I've been in many of wheel chair sections with people grabbing at their knees when their pain pills were back in the room.
We requested the congress park area, and in hindsite grandstand would have been closer to the main action of the resort.
Have a wonderful trip.
Connie