Realistically, 6 hours of celebration, a drink an hour, champagne at midnight, maybe an hour or two where I toss back more than 1, I'm around 8-10.
Think about it, a Martini is pretty much the equivalent of 3-4 beers. So people who drink like that... wow. But a beer, that's like 1 unit, get my drift?
People say all the time, "I only had ONE drink officer" but they don't realize that the cocktail had like 2-3 ounces of hard shit in it. Go have 3 martini's, that's like 9 "units" totally different than 3 beers. I count consumption a little different than most do, it usually keeps me from becoming a bumbling idiot.
DON'T DRINK AND DRIVE!