Sorry to hear about your foot, but I'm glad you're not letting it limit your vacation.
I don't have a ton of tips, but a couple I wish someone had told me were:
If you're in a manual wheelchair instead of an
ECV, make sure someone is willing to push you for most of the trip. One day at a theme park trying to wheel myself around left me incredibly sore the next day. It's a lot more upper-body work than I expected.
If you're in an ECV, try to remember that a lot of people don't look down. So if you're trying to move in a crowd or past someone, give 'em a head's up to let them know you're there. Otherwise they might not see you.
Speaking of
ECVs, for some reason, people will try to dart in front of or around you while you're moving. Since ECV's are so heavy, it can be hard to come to an immediate stop. I clipped a lot of people who did this at Epcot and, while it technically
is their fault for darting in front of you, it pays to be cautious to help avoid accidents.
Do something to decorate your wheelchair or ECV so you'll know which one it is when you get off rides that make you transfer. Tie a balloon to it, or hang a sign--something to distinguish it from any other rented wheelchairs or ECVs that may be on the platform/parking area.
When you're getting on a ride that requires you to transfer, ask your attendant where the wheelchair or ECV will be left for you to fetch after you've finished with the ride. Most cast members will automatically move the wheelchair or ECV to the departure platform, but it's always good to make sure, just in case.
The one that was a big disappointment for me is that the Haunted Mansion's wheelchair entrance means you miss the stretching room at the beginning of the ride. You go through a hallway that dumps you out where they load the doom buggies.
I think that's all I can come up with for now. Coincidentally, we'll be staying at POFQ for our own trip to WDW in three weeks!