Basically, you could give them your $20 (plus fees) ticket from Ticketmaster, or just give them $2.00 at the door to get in. We questioned the lady there and asked if Napalm Death would still be playing and she said, "Yes." She stated that if we didn't have a ticket, then we didn't need to pay for one, other than the $2.00 cover.
Remember this if you go to The Pearl Room! Buy your tickets at the door and you just might get in for next to nothing!