I'd have headaches and be tired all day if I'd "drink a lil" during the day. Not good when you have to sit in front of the screen all day and don't fall asleep.

That said it is interesting to check the mixes, sound design or music I was working on whole day after a beer or two. The analytical side of my brain just waves hands "it's ok, it's fine" and so the repressed emotional side has a go, sometimes making me change a lot of stuff quite radically. When I get back to it sober, it's often a bit of a mess, but the direction is right (more character, cooler, more engaging...).

Excuses :).

Be careful.