Above all, start off with a positive attitude. All travelers encounter problems to some degree, and the happiest of them concentrate on the rewarding experiences that come with any trip. Sit close to the door so you are called first, and board at your own pace. Flight attendants are required to stay on the airplane as long as your feet are on the plane, and will help you get your equipment. Although flight attendants may want to help, they usually need to be on their way to their next flight, and they are now no longer required to wait with you.
Every airline has an arbitrator available at all times.
Even when you carefully plan your trip, circumstances beyond anyone's control may change things. You may have booked a flight on an airplane with an on-board chair and larger bathrooms that are handicapped accessible. If this model of plane was scheduled for your flight, but that specific airplane had mechanical problems, a smaller plane may be sent instead. It may be necessary to talk with the boarding personnel, contact the arbitrator, and the airline would need to put you up, at their expense, until the next flight with the type of airplane you require is available. Carry on extra medications in case you are separated from your luggage.