I've developed a survival strategy over which I only have some control of consumption; my over indulging scenario goes something like this : 1) I talk a little more. 2) I laugh a little louder, and then 3) I take a nap. I can control 1 & 2, but have no control whatsoever of 3. Volumes may vary over a few hours, anywhere from one solitary beer or glass of wine to several. "Hey! HA HA!! Ever hear the one about the priest, the rabbi and the gunslinger?! They walk into a bar and..." zzzzzzzzz.
Booze on a canoe trip is the last thing I consider and is always seen as a luxury. I won't turn the car around if I've forgotten my whiskey, but whatever you do don't forget the eggs, bannock mix and coffee.