I'm surprised the Cow Palace would host such a venue... but understandable. Not that I agree that such events should be shut down. Since its ALL consenting adults going to a place they are well aware of.
No family or religious nuts expecting rated-G situations are going to be there or allowed.
I looked up some pics of EEB... very much my bag. The party I'm talking about this Halloween is a party, not a business or vendors or pros. Just a bunch of people who spend some time to build a party venue for a single night of anything goes (consenting 21+ of course).