Many people will tell you alcohol + PU = big no-no.
Some will say, just do your thing, but in moderation!
See, if you drink, you're not yourself. You lose fears and nothing does matter. If you fail a set while being drunk, who cares? You will just check the next one! But your goal should be to don't care, when you are sober!
It depends on the person of course, but as for myself I become very charming when I'm drunk, girls can't resist

So I know of course how alcohol helps your game, but I also know I have AA when I'm sober. That's why I don't drink when I want to purely game! In my opinion alcohol is just like cheats in computer games
And because of your job you seem to be a confident guy now. Game sober when you can do it!! Girls like guys who can control themselves. You can give them the feeling of safety when you are not drinking (much), they will like it.
Just don't miss out on other sides of life! If you wanna party and knock yourself out sometimes, just do it

But don't rely on alcohol when gaming...
Edit: So to answer your question: Yes, in general alcohol and game is a bad combination!