I'm having a hard time believing you aren't trolling, but in any case - nobody is taking American culture away from you, or forcing you not to drink your ass off during celebratory events. Notwithstanding that this was a professional environment, where alcohol during work hours is illegal in some places - why pressure someone who isn't into those things to do them? Many Americans are vegans. Will you force them to eat Turkey during Thanksgiving, or else get the fuck out of America?