I LOVE the Riv Deck! It's a great place to be, and I certainly wouldn't pay extra to move up a deck or two. As a matter of fact, IMO the Riviera Deck on Triumph is BETTER, because you'll have cabins both above and below you. If you move to Main Deck, you may be under the main Lounge, one of the dining rooms, or most any other noisy public area. As a matter of fact, I think I'd pay more to STAY on Riviera Deck!