Crowds are crowds. My family is headed down late August and will leave before media previews will likely start. My only concern is people like my own self - trying to get a trip in before GE opens and crowds arrive. Last trip we went about 2 weeks before Pandora opened - it was forecasted as a light week...however it was crazy busy! Locals getting a visit in before crowds combined with a break in a streak of bad weather combined with Wishes coming to an end all equaled "surprise! all our trackers were off". Our crowd level 4 and 5 days turned out to be 9 and 10s.
That said - not changing my plans, and not worrying about it. It our only week between camp and school - so we're gonna sweat it out. We've got fast passes, a stroller, and a pool at the hotel. We're doing this - crowds or no crowds!