Newbie...take your cruise and on the last night, look at what you were charged for the "service fee". Then divide it by the number of days of your cruise. Then think back about the experience you just had for however many days. Think of the meals - the royal treatment you received - the personal touch that the wait staff will most likely provide you. Think back to the number of times you left your room, only to return to find the beds made or turned down and the cabin cleaned. Think about the staff you saw on board the ship - always working, nevery loafing. You do that, and I guarantee that you'll be pulling your wallet out to give them more. And I honestly think that the only thing you'll be disappointed in on that last day is that the cruise is over.