Although as an add-on to that, many people abstain from alcohol for a variety of reasons (not because they're "no fun" or stuck up) so I'd leave that out to avoid making potential candidates feel uncomfortable.
I can see the recently-sober recovering alcoholic being the sticking point here, and I don't have a good answer for that possibility. So maybe you have a good point. But for the religious/philosophic/recovering-but-far-enough-along-to-go-to-a-bar I don't see a problem.
EDIT: now that I read the actual quote, it occurs to me that one can just throw out multiple options: drinks at a bar or coffee? The smart candidate picks coffee, drinker or teetotaler, to avoid the influence of alcohol in front of a potential employer. :-)
Sort of controversial, I know, but it's important for everyone to be open IMO.