Depends. I go to a Serbian parish, but none of what the others have said you would find (except the fully stocked bar in the hall).
We have few ethnic Serbs, a lot of converts and a good bit from along the spectrum of age. Our liturgy is in English, our Icons are labeled in English, but we do have a few bits of the Liturgy in Slavonic. As far as I know nobody smokes. We do pray especially for Kosovo during the Great Entrance, but I don't think Father has ever mentioned it in the homily.
But I have heard of other parishes where that's not the case. It can depend, on the West Coast at least, at how much the priest is following the influence of Bishop Maxim, who is very supportive of the type of parish St. Vlad's encourages (from what I hear).
If you're near us you can stand by my wife and I on Sunday if you like lol. The only other parish in town is a Greek one, but there aren't any WRO around for hours so I doubt you're near us.