Polish have the reputation of drinking a lot of vodka. When Polish go out and drink they drink in a different way than Spanish or Finnish. Here I will explain how I see the drinking culture when drinking with friends in Poland, Spain and Finland.
In Poland people might be drinking only vodka the whole night. Among friends they have few bottles of vodka and they like to drink it as shots. They might be taking one shot every ten minutes and after shot having a little sip of juice or soft drink. In bars they also serve shots where they mix different flavors. There are also many different vodkas which have flavor of lemon or something else.
In Finland people usually drink many beers and if they want to get more drunk they do it by taking shots. Shots are treated like some extra for beers. Drinking with friends also involves often sauna. Drinking rum or whiskey is rare because those are more expensive than vodka. As alcohol is very expensive people tend to buy the cheapest.
In Spain people like to mix vodka with different soft drinks. It is important to put first ice, then pour the alcohol and last the soft drink. Spanish also tend to prefer more rum or whiskey instead of vodka. The most typical place to enjoy your drinks is outside in a park even it is illegal. In Spain you can find also bars what are specialized in serving shots but in my opinion there is stronger shot drinking culture in Poland than in Spain.
Naturally in every country you can find people who drink beer, take only shots, make drinks or drink all kinds of alcohol in a one night but the descriptions above is in my opinion a typical way to drink with friends in each country. I would say that in each of these countries people like to drink to get drunk.