I agree, sounds like he thought he could make a little money off it and you wouldn't be any the wiser - little did he know!! I'm a TA, in fact a cruise agent, and I've never heard of them charging for an upgrade when you are on a guarantee, and thats true for every line out there. I have occassionaly been called by a line and asked if my clients would like to upgrade for a fee, and I then call the clients and ask them, but they have the right to refuse. Also, of course when a passenger asks for an upgrade at the pier, most lines usually charge these days for that, but then I think most passengers expect that.