My AH drinks every day. He drinks beer. He drank a 12 pack a day and on some days more. Recently (like this year) there were days when he'd drink so much he stumbled or slurred his words. I can tell by looking at him and talking to him when he's been drinking but most people would not realize until he was around 12 or more. Since he got out of treatment he perhaps doesn't drink quite as much - yet. He's ramping back up - probably at around a 6 pack a day right now.