I don't remember much of the story but the gist of it was that the REAL VAMPIRE party was pretty much a giant S&M/bloodplay/sex orgy and EBM DJ set. Sounds pretty awkward to attend if that wasn't your thing, but still way better than a cuddle party. And I've definitely got a soft spot for oldschool, 80s EBM.
smoking crow already called it and it's pretty obvious, but the fact that it was a VAMPIRE ORGY and that she was attending not because she wanted to go to an orgy or was a REAL VAMPIRE, but because a goth she knew offered to get her in and it was one of those things were if you have a chance to attend a vampire orgy you might as well. Plus she probably got tons of free drugs.
Come to think of it, I did sit next to a REAL VAMPIRE for most of a term in one class back in college, she was OK all things considered, and surprisingly ungoth - just anemic looking and manic, kind of like a really sickly Amelie if anything.