Get to the parks for opening, leave mid-day-either eat lunch in the park & return to your resort or eat lunch at your resort.
Take a hop in the pool with everyone else, shower & go back to the park around 5ish.
I don't think the crowds in August are any worse then Six Flags as long as you plan it right-I mean don't expect to get on Splash Mountain mid-day, go early in the am or at around park closing.
Kerri