Not quite right....there are different types of room configurations at the various resorts, and there is a room category called 'deluxe' at AKL and WL.
At CBR, the only differences in the room categories are in location and view. The rooms are all the same, except that some have two double beds and some have one king bed. Oh, and the corner rooms have two windows.
A Preferred room at CBR means that it's located close to Old Port Royale, where the eateries and main pool are.
A Waterview room has a view of some sort of body of water, whether it's a pool or a lake. Many say that the waterview rooms at the moderates aren't worth the extra money, as you don't have a balcony. Your room opens out on to an external corridor, kind of like a motel. It's kind of tough to see much of a view from your room, since if you leave the curtains open, passersby will be able to see in.