I think someone with a large house should host it and just throw a date out there this summer on a Saturday night, and ask for email interest. Based on responses received you could then post a confirmation of the date on here and via email. We could charge say twenty or thirty bucks a head for drinks and snacks. Anyone interested in hosting at their house, I will shell out some cash to buy the refreshments, and the hell with that paying in advance nonsense....because if you can't make it, you usually get denied a refund. I do not mind buying finger foods and booze/beer/wine, because any leftover beverages I would just take home.
If my house was big enough I would gladly invite you all here, sorry for coming up with an idea to invite ourselves to someones home...but I personally would feel less embarassed knowing I was surrounded by people into the same fetish as me, and not being in a public place.