Preventative maintenance, like with your car, goes a long way, its too late now but this is my rule. 2 drinks, 1 glass of water.
When we were in the Bahama's I was getting really lit one night and realize dI was breaking my water rule, I walked up to the bartender in a lobby bar while we were walking and asked for the largest bottle of water he had, it was a 1.5 liter bottle, and cost $10
I downed the entire bottle during my walk (stagger) back to the condo. I was fine the next morning.