We have been on 3 Royal Caribbean cruises. Each cruise we went on the biggest ship of that year. First the Oasis, then the Allure, and finally the Harmony. We have yet to be disappointed, as the ships keep getting better and better. Each time we cruised we tried to experience something different we haven't done before (Yes, the ships are that big with tons of activities and entertainment). The staff is amazing everywhere on the ship, they are very thoughtful and courteous. The ships are so well constructed and made that you feel like your on a city on a boat. I barely feel any ocean movement every time me and my wife cruises. Me and my wife loved the central park section of the boat. (Great for couples) The food is fantastic. We eagerly can't wait to go on their next biggest ship the Symphony Of The Seas.
When cruising we always recommend a Balcony. There is nothing like waking up to your port of call and opening the sliding doors to the great sights of the Caribbean. The cabins are pretty roomy, and I like the fact we had a safe for jewelry and cash.