Yes, they have elevators. But there is just one bank per building, so the elevator can be very inconvenient depending on where your room is. We found out the hard way last year. Next time I take my Dad to POFQ, I will be sure to request a room on the first floor instead of bothering with the elevator.
I think POFQ is a wonderful resort for those who have mobilty issues or who tire easily. Because it's so compact, no one is ever very far from the food court or bus stop.
We rent a wheelchair for Dad to use at the parks. But it's nice for him to be able to go the foodcourt of giftshop by himself without being completely winded.