Think I may rent a chair for my bad days and try to just use my cane for the easier days.
Wheels do take some getting used to, so if you get a chance to try out a set I would recommend it.

Will you be self propelling or will someone be pushing you?
If self propelling then as much working out as you can safely do with your back, shoulders, and arms will help a good deal. If being pushed just be sure the pusher

is aware that endurance and paying close attention in crowds are both vital. My sweet husband pushes me every once in awhile so I can have an arm break for a minute, but he can't see in 3d and is an awful judge of distance, and I have to be hyper vigilant to keep from being rammed into people. Consequently I choose to wheel myself most of the time.
The cane will be handy for walking and for transferring to and from rides. I have to use crutches for this, but can't walk more than a few steps with them.
Going to plan on spreading out the days so we can take our time and enjoy everything.
Good plan!
Still don't know where we'll lay our heads but we have plenty of good options and tons of time to choose.
What is most important to you in resort?

For us it was accessibility, swimming pools, lots of restraunts to choose from, monorail, and modern decor. If you know your list, it may be easier for those with knowledge (not me lol- I've only been to 2 resorts) to help you choose!