LOL!! In Orange County, CA, there are two Greek Orthodox churches. One, in Anaheim, does it all in Greek. The second one, in Irvine, offers English liturgy in recognition of the fact that no one below yah-yah age can speak Greek, and you will lose the young people if it's not in a language they can understand. In addition, they are at risk of losing members who marry "exenos" (non-Greeks) if they can't understand what the hell is going on. A Greek friend of mine has an exenos wife who has become a leader among the church women....because they attend the Irvine church which welcomes those who don't speak Greek.
In my town of San Juan Capistrano, there is now a pan-Orthodox parish (I think Syrian or something) that uses no Slavonic, just English, trying to attract anyone of Orthodox background regardless of national origin. Their argument is that the Orthodox are spread too thinly to be able to form parishes centered on national origin, and the beliefs are the same as long as everyone speaks the same language. With the rise in gas prices, they may have a point.
One time I was in a taxi from LaGuardia Airport to Manhattan, and the Greek taxi driver took me on a detour through Astoria (highway was shut down by an accident). I proudly told him about my friend who married a non-Greek but whose wife was a church leader and whose kids all attended church and religion classes...in English. His response: "but then it's not a Greek Orthodox church...:"