Well, I wouldn't call it a nightmare exactly.... there were good points:

So yes, we manage to actually get there on time, our guitarist meets us at the appropriate rendevous point, we're the first to the venue, and the word from the organizers when we get there is that we're probably the only band playing. So we set up.
After setting up, we get their PA set up, everything sound checked and nobody is there. It turns out that their were several graduation parties last night and so that's where everyone was. Well, after spending a couple of hours messing around to kill time we finally decide to start the show for the people who are there. At the beginning of our first set, another band shows up- which is fine, we were told their was time for everybody to have an hour- hour and a half to play. 3/4 of the way through that set the organizer comes up to the stage and sais "you've got ten minutes to finish."
WHAT!?!?!??
So we consult quickly, decide on our last three songs, tell them that we're doing three songs and procede to rip through them. I'm talking a smoldering pile of ashes was all that was left of the stage for we took our three most up tempo remaining numbers (one of which we stuck in a medley) and blasted through them. Well... by the second part of the medley we see her flash the lights a couple times (at the start of the song we said "this is our last number"- I guess she didn't hear). Next thing we know she's dropping a note on stage (and we've allready dropped segments from the medley). We finished up early, tore down... it basicly ammounted to the musical equivilant of blue balls. Talk about a crappy vibe.
But here come the positive notes before the final insult:
We had several people sign up for our mailing list, we sold a couple cd's and we got asked to play a party that night. TOO BAD THE VAN DIED!
So my drummer, his friend and I spent the night in a parking lot waiting for stores to open so we could buy an alternator belt and a ratchet set. Ever replace an alternator belt while laying in a puddle? Luckily the local Police were cool about the situation (the Littleton Opera House is in the same building as the Littleton PD- we were stuck in their parking lot).
Well, now I'm showered... most of the grease is gone. My hair isn't quite so close to turning into dreadlocks. I found a store with decent prices on Red Bull... I think it's time I vegitate. Maybe I'll unload the van sometime in the near future.