Do you have a wheelchair available?

I've never seen available wheelchairs. Usually people have their own. There is an elevator. There are places to sit with wheelchairs in the theatets. For a mobility challenged person, there is a moderately long hallway to ticketing, large lobby, and even further to different theaters. I would advise bringing a wheelchair if you have much difficulty walking.

There is an elevator

You may take the elevator.

The theater is on the second floor. If you need a wheelchair it may be difficult to get to the second floor.