In Finland we have these things called "Pönötys" and "kursaileminen". I'm half kidding, but half serious. Pönötys means awkward formal standing when you are wearing a suit or can of beer, but don't know where to put your hands or anybody to talk to. It actually happens a lot. "Kursaileminen" is kind of pretending that you don't need anything and have nothing to say. It's finnish way of being polite because you are not bothering anybody. Also happens quite a lot.

You do both of those and then you sneak to someone and ask them anything. It might well be "how do you know the host?" But Finns are quite flexible with the subjects because there is no culture of what you ought to speak about. You can ask anything, you don't have to ask anything. But do expect to get a throughout and honest answer.

It's great if you're imaginative and curious or if you want to be left alone. But if you fall in the middle it can get difficult.