We spent last Fri, Aug 1st at TL and it was great. A little crowded but not so much so that you couldn't do things. The kiddie area was fine, lazy river got crowed in the afternoon, but we were still able to get a floatie.
We arrived at 9:15 and stayed until 5:00. The boys had a blast. Of course I was camped out at the kiddie section chasing the girls, 4yo and 1yo. My baby favorite thing was the stairs. Not to relaxing for mommy.LOL
Spending the day at the water park truly made our vacation feel like a vacation - we felt like we spent the day at a tropical paradise resort! ... not always on the go at the theme parks.
Wishing you a great vacation!