I am being deployed to the Balkans. They do offer a Catholic Mass on post. The problem is the Mass offered on post is garbage. It is full of abuses and on the fringe with it comes to liturgical orthodoxy. Kosovo is not a Catholic area. The major Christian denomination is the Orthodox. My question is, if I can not find a Mass off post, and the Mass on post is full of abuses, would it be OK to attend an Orthodox service to fulfill my Sunday obligation?