We had a real ecumenical afternoon here in our parish. A Melkite rite Catholic man who is an alumnus of our parish high school married an Orthodox woman in our Latin rite church. A bi-ritual Catholic priest led the ceremony. It's our parish policy to allow alumni to have their weddings here, even if they've moved away or aren't parishioners.
I was surprised to discover that with the permission of our pastor (for inter-rituality) and a dispensation from the Melkite bishop (for the man to marry an Orthodox), all of this is entirely possible. Since neither party is a Roman Catholic, however, we have no jurisdiction in their case and their marriage will not appear in our records.
It was really something to watch with all of the Eastern liturgical elements and chanting in Arabic going on under our image of St. Margaret Mary!