At the boarding area, the CMs will usually ask if you can transfer to the ride car (they might just say, "Can you transfer"). If you want to get out of the wheelchair for the ride, just say you want to transfer. For some rides, the exit and entrance are in different places. When that happens, the CMs will move the wheelchair to the exit while you are on the ride. For many rides, you will be boarding at the same place where you'll get off.