Come on guys, get with it.
Your typical hen/stag party starts off in the road transport to the airport. Beers, shots, bubbly.....and then they arrive at the airport. Somehow they keep it sensible through security, and then straight into the bar for another half a dozen before boarding.
Some of these parties are literally 'hammered' when walking up the steps.
Some friends of mine recently stayed up all night and THEN traveled to the airport for the flight. They all flew.......
This isn't an airline issue, it's a cultural issue that is not regulated while transiting through the airport. I honestly think banning alcohol on board would see a couple of extra 'downed' in the airport in readiness for the 1 hour hop to Prague.......
Tougher regulation at airports.......simple!