We went on Navigator of the Seas in April of last year with a group of 16 friends and family and had the best vacation (outside of WDW) that we had ever had. It is an absolutely magnificent ship with so much to do each day that we couldn't possibly have done it all. I also used cruisecritic.com for information and hints and tips and found it a great resource. We had an inside cabin (category M) and the 3 of us (DH, myself and DS9) were quite comfortable as all we do in the room is sleep, shower, and change. My son loved the kids program and wished that he could have been in it longer. On 2 of the port days (Grand Cayman and Cozumel) he actually stayed on the ship in the kids program while we went ashore and we felt totally secure in allowing him to do so. The food was out of this world and our server in the dining room was awesome (Eric/Estoban). If I can answer any questions feel free to ask.