I won't say no to a guy having a beer while carrying but I sure will if he is getting ready to shoot on a range with other people around. Formal or informal range doesn't matter, powder and alcohol don't mix
Studies have shown that people exhibit similar and more impairment than they do when consuming some amounts of alcohol as they may be when they are tired, sick, etc.
If someone had a sleepless night, shall they not go to the range? Would you send someone home from the range who had a cold/sinus infection? A little inner ear infection can make someone's balance more affected than a few beers.
I'm not berating you, merely making the point that everyone needs to remember 2 things... First, they are responsible for their behavior and behavior has consequences.
While remembering those 2 things, I encourage people to use their own good judgement as to what they do, when they do it, etc.
True, unfortunately (with our nanny government) we are best to live within the law... having said that, just because something is illegal doesn't mean its wrong, and just because something is legal doesn't mean its right.
Use your own good judgement and be prepared for the consequences of your behavior.