You may call this a culture but in my time it was a way of life!
It was also a way of life in the civilian longhaul operation!
Things have changed and that is up to the individuals now engaged in the flying game. In my day they would have been called "whimps" if they did not join in the happy hour celebrations or the tree party!
But that's another story.
I loved the flying, the drinking and the socialising! Great times and wonderful memories!