Saturday, August 25th 2012. And be at that parking lot by 8:30. Seriously.
We're all responsible adults. That's sorta the point, to leave a little of that behind. But if a group of responsible adults can't arrange to meet in one place at a given time then I worry after all your children. So for crap's sake, show up on time and it will be the last responsible thing you have to do the entire weekend.