You're not included anyway! This event is exclusively for us elitist owners of the new DLC for L4D2, not for lame owners of just the boring old original version of the game. ;)

Nah, if you could make it, I am sure we would all be happy to play one of the original campaigns, or the 05s and I could move our playing of the DLC campaign up by an hour (took me 45 min to beat it the first time on normal by myself, 30 the second time with two friends) and be ready to play a regular campaign with you by 0830. But if you can't, there will always be next time.