Stories about intoxication don't win friends and influence people. Except Drengin. Small details like this are really useful in suborning...uh...getting to know our galactic neighbors. Did you know the Drengin really like to sing campfire songs and hold hands? Okay, see, that's just the kind of thing we want to avoid. They really don't like that stuff, so "Expert Diplomacy" is of paramount importance.