The best building in AB is bldg. 14. However, it is reserved for the physically challenged guests so it is hard to get in . Bldg. 15, and I think 18 are also close. Bldg. 16 might not be bad either. If you have a water view then Bldg. 18 is a great location. Waterview rooms are right by the path, I think, that leads to the food court and main building. There is also a quiet pool by Bldg. 16, I think.
We stayed in Bldg. 15 on the side away from the parking lot. It was close to the bus stop, main building/food court and fairly close to the main pool. Some rooms in that bldg. are very close to the parking lot and that made me nervous with a small one. Didn't seem to bother my hubby, though.
You can put as many requests on your ressie as you want in but put them in order of preference. I would also recommend a first floor room. There are no elevators in the AB section of the hotel. You would be climbing stairs and the load gets pretty heavy in the evening with kids.
Hope that helps. You can view a map of the resort on this site. That will give you a better idea of what I am talking about in relationship to these buildings. Some say that there is a mansion or two that is close but since we didn't stay there I'm not sure. The AB section was ideal, though, with a 3 year old.