I work rotating 12 hour shifts. When I'm on nights, I don't drink at all. Not because it "feels wrong to drink at 7am", it doesn't. Because I usually crash as soon as I walk in the door and I won't drink before work. Otherwise, I typically drink by myself at home, so probably 2 maaaaaayyyyybe 3 if I drink at all. When I go out or on the rare occasion I have company, I'd say around 6-10 depending on the night. But it's pretty well spaced out over several hours so I never really get drunk, just a happy little buzz.