Countless nights have I sat across a table from someone & watched them get plastered silly and throw away their entire stack of chips. I've been that person too - and there are nights where you're just playing with friends for low stakes and it's more about the fun than the poker - but if you're in a casino, watch the alcohol. The truth is, while you may be more relaxed after 2 drinks, it may lead to you playing looser and less sharply, even if one's not 'drunk.'