For some reason that is a perception on this forum, that GOAA churches are culturally oriented. At 59 years old, I've lived through witnessing some ethnicity, but growth in the faith was always the overwhelming dominant thrust of the parish's ministry. The culture came up on Greek Independence Day, and sometimes "Ochi" Day, October 28th, (when Greece pushed the Fascist Italians back out of Greece into Albania). Keep in mind there has been very limited Greek immigration since the 1970's. I see only a little culture anymore in the GOAA parishes, at least in my experience, in the Metropolis of Pittsburgh, (Northeast and Central Ohio, Pennsylvania except Greater Philadelphia, and West Virginia). Probably New York, New Jersey, and Chicago retain more cultural attachment these days (Canada and Australia too, I'm sure), but really, I don't see this Greekness that you assert. We do have a Greek School and allow them to offer a Christmas play in church, most of it in Greek, following the Liturgy, and the Sunday School does one too, in English; likewise a 10 minute Greek Independence Day program is allowed after church. No other mention of ethnicity, none, all year long; just worship and living the life of the Orthodox Church through the church calendar. We have a Greek dance group among our youth that dances at our annual Grecian Festival, which is more of a fund raiser, than a cultural event and includes instructional church tours (many of which I conduct). I find GOAA priests dedicated, devout churchman, wholly dedicated to the Christ-centered priestly ministry exclusively. Our year round Sunday Liturgy is 90% in the English language of the priest's parts, though the choir chants almost all of the a major hymns in Greek still, but it's more because they haven't taken the time to learn them in English yet. We have much more English, probably 80% overall, in the Summer months when we have chanters and congregational participation. My priest always looks over the congregation to decide how much of which language we will emphasize, but I recall a funeral when he was new to our parish, I am the chanter and went into the Sanctuary to whisper to him he might want to do a little more Greek, but he replied, "They have to understand this is the way we execute the services at St. ____." Our Liturgical Assistant Priest is an American convert, St. Vladimir Seminary graduate, affiliated with the Antiochian Archdiocese, with a limited knowledge of Greek.
And frankly, retention of cultural activities comes from primarily American born, often 2nd generation parents of the youth, who want the kids to learn the culture, there isn't another venue for that even though we have Greek fraternal organizations. I was looking over our 70+ youth in the dance groups and I'll bet the majority of them are 25% Greek. It is not the Parish Council or the Priests, and not our Metropolitan, promoting ethnicity in the churches.
During his archepiscopal tenure, 1996-'99, Archbishop Spyridon of America reported that 30% of the GOAA parishes didn't have Greek Schools.
The other GOAA parishes in my area are similar with their expression of Greek ethnicity. Out of 6 parishes in the area, 1 has always been the more ethnically oriented parish. It's the intercity "mother church," the ethnic orientation keeps its membership numbers up, because no one lives near it anymore. That church, in the past decade, has declined in membership (They're transferring to our churches in the suburbs.) The current priest assigned there is American born, and his Greek is not perfect. When he was assigned, the Metropolitan had their parish council come to Pittsburgh to meet, to tell them the parish had to move more toward English in the Divine Services because their youth were now in their 30's and they are American born, primarily, (They have youth too, who are the children of yesterday's youth.)
Anyway, these discussions about the "Greekness" of the GOAA parishes annoy me because they ignore the massive decline in cultural association in the parishes over the past 30 years that I've witnessed, and ignore the Orthodox spirituality which overwhelmingly dominates the life of the parishes. I can recall parish bulletins that were half in English. Today, there is not a word of Greek in our parish publications.
If this is not your experience with a GOAA parish, I'd like to see from where it is that you are seeing all this cultural orientation.