Can't speak for others, but our most recent wine get-togethers have been 1-1.5 bottles per person. I try to go at least 1:1 on wine/water if not more. We also take a LOT of time. Last dinner with b-man and M was 4+ hours, and that was pretty short. I drink a ton of water before retiring as well. I figure that if I don't get up at least once in the middle of the night to take a leak, I haven't had enough water. I'm not always high-functioning in the morning, but I am functional. And get off my lawn.