A traditional picture of a Polish wedding is a huge village party lasting for two days with huge families, everybody is totally hammered, there's the creepy drunk uncle, and for sure there must be at least one fight after which nobody remembers what was it about. Nowadays, especially in big cities, it has somehow faded away. Probably because weddings are so expensive and people came to their senses as they have their contemporary problems, also it's not viewed as cool to trash a wedding, so maybe people tend to control themselves more on such occasions. People get really hammered on casual home parties among friends and clubbing in town, not on weddings.

It's something sometimes hard to explain to Americans, but in Poland, Russia, and most of Eastern Europe in general, vodka is a big deal. People don't care about drinking beer or wine (although they are very popular), but there is a certain culture and ruleset about drinking vodka.