flarepilot, quit posting about things you don't know anything about. You sound like a teetotaler. The worst sort of holier than though fact-free ignoramus.
Alcohol does about the same thing to you regardless of altitude. I say this as someone who has consumed a lot of beer well over your cabin altitude. I lived above your cabin altitude for a year; alas I was unable to become drunk any easier than I've been able to elsewhere.
http://www.nytimes.com/2008/09/02/health/02real.html
Further, 2 beers in the better part of 3 hours does not make an adult male drunk. Even if its two really tasty locally brewed beers. It might make operating machinery unwise if you are smaller or the beers are on the strong side. Should be just fine for riding aeroplanes.
