I was a lobbyist for a number of years - a lot of lawyers are also lobbyists - drinking IS everywhere in that field. Every event is a drinking event and there are drinking parties 3-4 nights a week during the legislative sessions. Plus, fundraisers in the off season - depending on the type of law, lawyers do end up dealing with a ton of issues - and likely seek relief in the bottle.
I don't do direct lobbying anymore - I'm in a more behind the scenes role - and it keeps me away from all the alcohol events.