I don’t see why this would be a factor in any career decision. My company is small enough such that if someone gets seriously drunk you’d notice. People are sufficiently responsible to know not to drink during office hours. There’s an all you can eat snack bar here too, but I rarely touch it. Self discipline, my friend.
The smell of alcohol grosses me out–most people don’t bring beer to work, but I wouldn’t want it easily available to make it upstairs to the work area. Also, if it’s considered a perk, it’s going to attract a crowd that I might not enjoy socializing with as much.