I agree with Tiger, but I would also point out that the new Lahaina pool has a shallow end by the jacuzzi that is just terrific for young children that are learning to swim. My 3,5 and 7 year old absolutely loved it, and it's more shallow than most of the primary pool so it's a little easy for us parents who are watching them.
The upper end of the Lahaina pool is very quiet and i didn't see children spending time up there.