Now if I am accompanying or it's a formal setting I refrain from reeking of alcohal...
Pretty good advice in general! Lol. I know just what you mean, though: playing in a bar, having a little beer/whiskey breath probably doesn't register among all the other ... interesting ... smells in the place, but there's something about the way alcohol is metabolized that, if you take a lot of it (depending on personal chemistry, maybe like....I don't know what the limit is) it's just a foul odor.
Doesn't really even smell like booze or wine -- it's just a nasty smell that sort of gives away your game from a mile down the street.
I can't preach because I enjoy a drink in my spare time -- everyone needs hobbies! -- but more than a few (socializing, mostly -- or to put a more "professional" spin on it, let's call it "networking"!) just doesn't work for me because of (a) it gives the wrong idea to bandmates/club owners/potential future employers (no comment if it's as bad or worse than permanently announcing your presence by a cloud of pot smoke like some jazz/funk "musicians" I know!) (b) screws up my rhythm (c) needing to hit the toilet every few minutes to urinate is kind of lame.