I just LOVED AKL, and will return there on my next trip -- whenever that is!
I agree with the posters above that for a "deluxe" the rooms are small -- but the savannah view was worth the tradeoff for a smaller room.
As for swimmie diapers -- they do not hold in bowel movements. They just don't get overfilled with water when submerged. I had an incident with my son (not at Disney - at a swim class) where he had a BM in the pool. He was 18 months old at the time. Well, I didn't notice he made a BM. I thought he was screaming because he didn't want to go in the pool. We weren't in the pool for more than 3 minutes before the BM came floating out of the back of the swimmie diaper. I was MORTIFIED! It was really horrible. Needless to say, they closed the pool for cleanup, etc. My lesson -- babies should wear plastic swim pants with elastic around the waist and the legs over their swimmie diapers when in public pools.
Anyway, go to AKL, you will love it!