i was in a cong that was comprised of a lot of ex-druggies with alcohol probs - and they were all sooooooooo super sensitive to being stumbled. Some wouldn't even go into the home of a bro/sis who had beer/wine/booze of any sort - not that they'd offer it to the person - just the fact that it was THERE. and we had a bunch of suspicious minds who literally went around sniffing breath before meetings to see if they could find someone to torture. so - meeting nights, water only.
however - we were notorious for going out to lunch when at assemblies or conventions - and we'd have a drink, yes....then go back and have to fight not falling asleep throughout the boring afternoon. if anyone said anything to my hubby, he was/is ballsy - and he'd tell them where to put it. i really don't think anyone ever did take it up with him....he wasn't the sort to take any bs.