I'm from Richmond, VA, so I'm in for a 2 hour drive to the Kraftwerk show on Tuesday.  I want to park in the parking lot, when does it usually fill up?  I might not get there until 8 or 8:30, is it full by then?  If it's filled up, is there another place to park that is safe?  I was going to buy a parking pass through tickets.com and pick it up at the box office, but it looks like it cost $5 more.  If I buy the parking ticket through tickets.com and don't pick it up from the box office until 8:00 or so, will still get in the lot?  Any help?