I just returned from the 7 day Magic. I gained 3 pounds but I have already lost it. I was more active than usual and I took the stairs whenever I could. At dinner, I tried everything but I didn't always finish it. I made a point to really determine whether I was hungry or just wanted to eat. I even had two deserts one night.
Enjoy yourself, like they kept saying on the ship, "It's only 7 days."
Enjoy!
Denae