I guess it's a similar story with Serbs...from what I observed...Serbs like to call them selves Orthodox Christians but that's about it.They do not go to church very often (here in diaspora they would come for holidays mostly to see other people drink and eat so there for they spend more time outside the church during liturgy).They like to celebrate Sents and religious holidays but they hardly fast when it's required...Even some of those who celebrate their Sant would openly say that they do not believe in God are doing it because of the tradition ( and to show off themselves as " big Serb". This is the effect of 50 years of communism but it is interesting that it did not affect that much catholics and islamists in ex-yu.They tended to keep in touch with their religion during communism while Serbs tended to be " big communists" back then.
On the other hand I do not think that Christians nowadays where ever they live really live by their religious requirements...
Orthodox church also is very rigid and is rearly going with times requirements so it's hard to follow very stricktly.

Science without religion is lame, religion without science is blind...Albert Einstein