I am Roman Catholic but practice my faith in a Maronite Catholic Church which traces its liturgy to Antioch. Many of our parishioners are from Lebanon which has a varied community of both Catholic and Orthodox churches. It is not uncommon for these families to intermarry. When they do, it's understood that the wife will worship in her husband's church. It gets quite interesting since there are brothers and sisters who have intermarried. To cite an example, one of our male parishioners is Maronite but his wife is Orthodox: they worship in the Maronite Church. His sister is Maronite but her husband is Orthodox: they worship in the Orthodox Church. On major feast days, because the churches follow different calendars, the families celebrate in both churches! It all seems to work out well, especially for the kids ; - )
I think in the Holy Land, either this year or next, a decision was reached to do Lent/Easter at the same time. As it is seen every few years, next year, I believe, all the churches will do one Lent and Easter.
About the Holy Land churches deciding to do one Lent/Easter, do you know anything about that?
Plus this year you can buy Easter Items at a discount after Catholic Easter.