Everyday was a weekend. One of our new friends we met at the pool had a great quote. He said, "To me it's either 'morning' or 'night' but it's always 'Saturday'".
Well every day is a party, but in our opinion the best party day is usually Saturday. Reasoning is it is always full capacity and they usually bring in a real DJ that helps turn things up a notch at the pool, instead of the normal dj that just repeats the same mixes that annoyingly switches to another song right when you start getting into the song that is playing.
I was pretty much going to post a similar response. In Jan. when we went I did notice more day pass visitors and it changed the vibe a little but was still fun. In April it was just a bigger party but the resort was full anyway. Also in April they had the DJ more than just Saturday as a few people with pull asked them to. A real DJ is always better than the canned stuff.