The last time I asked my AH not to drink at or before a specific event, he ended up drinking double just to spite me for even asking such an absurd question. When my cousin's wedding rolled around I'd learned my lesson, it was, "There are three RAs in this wedding, and anyone who has been drinking gets left home." That went over better, believe it or not -- I wasn't trying to control him, and they're not trying to control him, this is just the way it is if you want to go. It was the first event in a long time that I had a husband beside me who was NOT swaying -- for a whole weekend, your mileage will no doubt vary.