Serbian Christmas is a very family-oriented holiday. So on the 7th, almost nothing is open except for a few cafes. And places start closing from the evening of the 6th. This year the 8th fell on a Sunday, so some establishments decided not to open on that day either.

Usually everything is celebrated at home, and fish dishes are often prepared because it's customary to fast during these days, but I'm not a big expert on festive menus.

As for celebrations in the streets, besides burning the Yule log and amateur fireworks, there wasn't really much ¯\_ (ツ)_/¯