We select our suite based on the ship, promotions and itinerary. We love the Penthouse suites on the Splendor and Explorer, so we have a Butler on those ships (and will when we travel on Grandeur one day!). On Navigator we stick with Concierge. When we do have a butler, we utilize the services and enjoy getting to know them. Our experience has been that he is always available, quick to respond, and gives us that little bit of pampering that we don't really need, but do enjoy. We've had previous butlers stop us in the hallway to say hello. Coffee/breakfast service, canapes, answering our many questions throughout the cruise, and the smiles that make you feel special. Do we need a butler, no. Do we enjoy it when our level of suite includes one? Absolutely!