Serbs are Orthodox Christians, and as such, are facing faith and church. Accordingly, much attention has been given a church wedding as seriously sanctity marriage, which is the basis and foundation of the family, and thus the church and state.
The main Church of Serbia and Montenegro is the Orthodox Church. Like Russia, the tradition is to use the Julian calendar as opposed to the modern Gregorian calendar - at least when it comes to holidays and traditions. Day to day life is ruled by the Gregorian calendar.
Unfortunately, Serbia is not a vegetarian - friendly country. Most of the people in Serbia are heavy meat - eaters. Do not take for granted that every restaurant has vegetarian cuisine, and do not try to find organic food shops.