I'd say it's a safe bet to say the majority, if not the vast majority, of
bartenders are drinkers to some degree. Some are outright drunks, some drink
on occasion, but most of us have been known to have a drink once in awhile.
That being said, as was already posted, there ARE nondrinking bartenders out
there. I don't know any personally, but they are out there. You might catch
a jab from coworkers once in awhile, but I don't think anyone will seriously
think less of you for it - it's a personal preference.