Man, you just gotta think outside the bottle. Tell your sis, niece and nephew that you are throwing them a party on the 28th, and that it's going to be so big you can't have it at your place. Problem solved.
Well, if Java isn't coming then that means clay probably isn't either, because I personally have never seen the latter without the former. That means I can invite dancing girls without worrying about corrupting the purity of the tasting. (What can I say, I like women and song with my wine.)
Official holder of unofficial, unauthorized, non-woot gatherings.