The boarding groups are called from a large room at the port. There’s plenty of seats there. Does he use a wheelchair? If you want to get off the ship fast take your own luggage off. If you let the porters do it it doesn’t save much. For us we go to breakfast in the morning, go back to the room to pick up our luggage, walk off early. You don’t have to wait to debark or look for your luggage in a sea of luggage. Once you have your luggage and if you have passports it’s a shorter line to go through customs