Well, I don't live to far from San Diego but two years ago I went all four days and camped at a campground about 10 mins from the convention center, Sweetwater Summit. It was only $16 a night, so, if you're broke like me then that's the way to go ^_^ Anyways, I'm looking forward to going this year. If you have any good spots to stay at while in town please feel free to share.