Last year, my wife and I cruised on the Oasis of the Seas, so we were familiar with the size of the ship when we cruised on her sister ship the Allure of the Seas.
Other reviews ave commented on how quickly embarkation is and I can only reiterate what has been said previously. Royal Carribean defintely knows how to move people through in an efficient and orderly fashion. Cruise employees are with you every step of the way to insure you are in the correct lines.
Once on the ship, we went to the windjammer (Which was very crowded at this time while we waited for the rooms to open up. They said the doors to the cabins would be opened at approximately 1 pm and they definitely were. We had 4 bags.. 3 were waiting for us when we arrived at our cabin, and one followed about 3 hours later. My wife decided to take advantage of a massage treatment which she said she will always do from this point forward. It relaxed her immensely.
cabin was very nice. we had outside balcony . it was a nice size, and the bed is very comfortable