I email specialneeds at least a few weeks b4 the cruise and tell them that we need the mattress topper because we both suffer back pain. I also add that I understand that they may not use mattress toppers any more, and an extra comforter under the sheets will be fine. When I get on the ship, I check with the cabin attendant and insist if necessary. I have only had to insist once, on the Wonder last month.