Maybe you can find information if you look into the Russian Orthodox Church??? IIRC most Orthodox require marriage in their churches but I feel I’m on really shaky ground here.The bride we are preparing for marriage is a practicing Rumanian Orthodox and this couple is marrying in the Roman Catholic church of the groom. The bride’s priest told her that if she marries outside of the Rumanian Orthodox church, she is excommunicated. Can you explain this law of the church to me, please?
From An Agreed Statement on Mixed Marriage (1971):This is also why usually the Latin bishop will give a dispensation to have such marriages take place in the Orthodox church. That way the theologies of BOTH Churches are respected and satisfied.
According to the view of the Orthodox Church the marriage of an Orthodox can only be performed by an Orthodox priest as the minister of the sacrament. In the view of the Catholic Church the contracting partners are the ministers of the sacrament, and the required presence of a Catholic major cleric as witness of the Church can be dispensed with for weighty reasons. In view of this, we recommend that the Catholic Church, as a normative practice, allow the Catholic party of a proposed marriage with an Orthodox to be married with the Orthodox priest officiating. This procedure should, however, take place only after consultation by the partners with both pastors.