I was never one to try and get out for Memorial or Labor Day, too much traffic, too many other people to compete with. I'd much rather hit the beach in Sept. because the water's warm, the people are gone, the prices are usually lower. Although this year our summer trip was awesome because of the same reasons. Sometimes you get lucky and find a place where no one else knows about, that's only happened a few times but the vacation is always better where there's fewer people.
Also took a mini-vacation to the Appalachian mountains in MD, other than the rattlesnake, I didn't mind my neighbor's one bit, they were all at least a quarter mile away.