Sorry, I am not a teetotaler, and I also think we should have a couple of beers in the nightstops. If you would change the drinking limit to 24 or 36 hours in my airline there would be no more beer.
But 6 pints is almost 12 beers/units, you will need more than 12 hours to burn it off. I think 8-9 beers/units and stop drinking 12 hours before will just about clear you to be 0% at check-in.
