There's a sephardic one and there are two for european jews. For daily prayers things get complicated. Many times minian is reached thanks to people reciting Kaddish for their dead loved ones. This is a conservative community, whatever that means in our everchanging jewish societies. But one could say that the patient here is showing good health.
Mixed marriages are frequent enough.
If the non-jew is the man the children are in almost all cases raised as jews with the consent of the father. When the non-jew is the woman things get a bit more complicated, sometimes she goes to Miami for a quick convertion which almost no one takes seriously, or she doesn't convert but agrees to send their children to the jewish school. This is a Roman Catholic country so things seem to go either way. In general these couples choose our way. In more open societies like those of Argentina or the United States they would have probably felt no need to make any choise.