My mom uses a wheelchair when on a cruise ship or anytime that would involve long walks and it works out really well. She is 92, and walking longer distances wears her out. So the wheelchair works really well for her. We inherited the wheelchair from a relative who had used it after an automobile accident and didn’t need it anymore.
On the websites for airlines, you can request a wheelchair assist. We have found it invaluable to have someone help us through security and onto the plane. Most airlines have loaner chairs available for use at the airports.