Hello, welcome to cruise-chat.
Our last 3 RCCL cruises, we have walked our luggage off. We keep it in our room, and walk it off, and go straight to customs. We generally only have 2 bags each. We much prefer to walk off our luggage. It spares us the whole "find our bag" nightmare, and leaving our luggage in the hallway. I don't know if they have an official "walk off program". We just always did it. Having my luggage lost several times when flying, and 2 car break ins, and theft attempt in Milan, I am paranoid about leaving my luggage out of site. I am either paranoid or it is my OCD.