I am not sure what the official "pool hours" are. We usually stay at Kidani, and the exercise facility is accessible 24 hours a day, and we usually shower and take a swim or soak in the hot tub after we exercise. Usually this is when we return from a park, and sometimes this is after midnight. Sometimes, when we have gone to exercise early in the morning, like 6 am, the pool has been closed for maintenence at that time, so, not usuable.
In all the time we have gone, we only had one unpleasant experience with the self proclaimed "quiet pool police". We were staying at BCV, about 8 years ago (it was before AKV was open). The kids were young then--about 3, 6 and 7 or so. My husband and brother took the kids to the quiet pool while I went to do laundry. I put the laundry into the machine and was going to go outside and sit by the pool while the laundry was going. When I looked out by the pool, it was so quiet that I thought the guys had decided not to go the the pool. The I looked more carefully, and saw the guys WHISPERING with another adult, and the kids were standing in the pool. I asked them what was going on when I got there, and my husband explained that somebody (another guest) had YELLED at our kids for splashing and laughing in the pool, because they were wanting their kids to go to sleep. As I recall, it was before sunset, probably about 8 pm. We actually haven't stayed at BCV since. Our rooms didn't face the pool. I guess that is the risk of having a "pool view". Even pool maintenence can be noisy. Even earlier than this episode, we were "upgraded" to a "pool view" room at All Star sports, and it was noisy from early morning, when they sprayed down the deck, until early morning, with kids playing in the pool until 2 am. But, we had gone at spring break time, and there were groups of cheerleaders there. We learned not to accept another "pool view upgrade". It's a good thing it was free. But, it never occurred to me to vent my frustration on the other guests who were having a good time.