where can I get a wheelchair

If you're going through the CityWalk security hub, there is a wheelchair rental area near the restrooms

In the very front entrance of the theme park, there is a wheelchair/stroller rental

At the entrance

At the City walk hub next to the souvenir shop! You'll see the desk!

You can also rent wheelchairs from an outside vendor who will deliver it to your hotel and pick it up. Their prices are substantially lower if you need it for a few days. Just Google wheelchair rental for Orlando theme parks etc.

Front of either park. You can get a ECV scooter or wheelchair.

There is a rental at the entrance.

You can get one if you visit any of the guest services locations.

I think you can rent one, I know that there's a truck that drops electric scooters off at the resort.

at guest service in the front by the gate/ entrance

A hospital

Guest services located at the main entrance in the city walk

There are sign posted for facilties

Wheelchairs may be rented at Guest Services/Rentals. Both can be done outside of Main Gates entrance to theme parks or once inside. If during your theme park visit you twist an ankle or have swollen legs from the heat, First Aid will also allow you to borrow a wheelchair for the remainder of that day in the theme park.

They usually have them in the front of the park at the entrance

You will find them after you park, and before the check point, there is a small fee, they even have strollers for kids.

Front entrance or from ticket booths