You can definitely get a scooter through the door. I ended up having to go on my last cruise with a knee walker. I wished I would have ordered the scooter. A wheelchair is going to be very difficult, especially if you have to push it. I had a tremendous amount of trouble with the knee walker because a lot of the roads in ports were not smooth and after the second stop I gave up getting off. And I'm young, relatively healthy and in good shape. It was more than I could do. I would have totally done the scooter over the knee walker or a wheelchair.