I'm from Belgrade, Serbia. Not exactly EE, but close enough. Been all over Balcans, WE and EE, so i can draw some conclusions based on experience.
Roosh is right. Generally speaking, buying girls drinks and not being an asshole will not hurt you. In fact, it will help you, especially in smaller/poorer cities. It's a cultural thing in many of the countries in the region, and flat out refusing to buy a drink for a girl who you are talking with is considered cheap, if not weird.
So you should buy if you invested a bit of time in a girl. She'll do the same for you from time to time, if she can afford it and if she likes you.
Roosh is right. Generally speaking, buying girls drinks and not being an asshole will not hurt you. In fact, it will help you, especially in smaller/poorer cities. It's a cultural thing in many of the countries in the region, and flat out refusing to buy a drink for a girl who you are talking with is considered cheap, if not weird.
So you should buy if you invested a bit of time in a girl. She'll do the same for you from time to time, if she can afford it and if she likes you.
Balkan Power Individual™