Undertheradar-- I'm glad that I'm not the only one who felt this way. Imagine if it was your Jw wife/husband/kids that had to attend at that time of night...
If that were the case, I'd still be pissed off at the elders sloppy work in not ensuring that they were following all the rules related to renting the facility. Knowing that alcohol was to be presented, they could've very well notified the venue up front and requested a variance on the grounds that it was ceremonial and that virtually nobody would be dringking. This is a standard rule I've found in renting any public facility. You'd have thought that they would already know about it.
As cheap as I know JWs to be, it would not be unheard of that they kept the alcohol a secret to avoid paying the cost of having a security guard thinking no one would notice.
The whole exercise is a collosal waste of time anyway....