1. You can board about 11:30 sometime before...Depends on how fast the ship clears.
3. I have not heard of anyone that I have booked on that deck say anything about noise from Riveria Deck.
4. Menu is limited in your Room. If you dont want to dine in Dining room try Horizon Court its a great place for Casual Dining. Or go up there and get a plate of food and take to your stateroom. Your choice.
4b. Cays is a nice place to swim, have a nice BBQ lunch. They have games ect.
If this sounds like fun for you it would be worth it. Wear good sun block. It can get real warm and Sunny.