We have always gotten priority check-in on every cruise line, since I use a scooter. The allow wheel chairs & scooters in first at the check in. when you get to the port just ask one of the line's employees where you need to go for check in. Debarking is a bit different. They either allow you off first, last or make no concessions. It seems to be different on every ship, and on each cruise line. That's about the only "perk" you get. If you need a handicapped cabin, you need to request it VERY early and submit a letter of need from your doctor. You get a handicapped cabin ONLY IF they have a cabin available.