But when you pay with your Amex card, you do get an invitation to a VIP cocktail party and an exclusive Q&A session with John Mayer. The odds of meeting him certainly get a little better. Still, if you're going for budget, there are cabins available starting at $799 for a double, but you don't get any face time with the man. But Mayer isn't the only entertainment on the ship - there will be concerts by some other folks I've never heard of, including O.A.R. and Guster (who?).