Hi Dave this is Jodi from your other page Goin In November but havin knee surgery in 3 weeks. I need healing pixie dust lol
There are wheelchairs and scooters for rent at all the Disney parks. There are also wheelchairs at the Disney resort hotels that they will let you use for free during your stay. (A few years ago, I broke my ankle just 2 days before we were supposed to leave to go to WDW. Went anyway - no way I was not going when it was older grandkids' 1st WDW trip! - and they had wheelchair ready & waiting for me when we checked in.)
Good luck - and I hope your surgery goes well and you have a speedy recovery.