I was told be a scotch-irish dixieland friend who wanted to convert to Orthodoxy that he was more or less thrown out of a Greek parish in Alabamba for not being greek. I told him all he had to do with grow a beard, learn some greek words and wear some evil eye amulets/jewelry and say "no speak english" and he would be accepted but he thought that was too much effort. I also had a native american female friend in Florida who had a similar experience. In the south over in Tarpon Springs they once had "no negroes, no injuns, no greeks" signs around the town. I think that the experiences of greeks in the deep south has led them to turn inward and return the coldness shown to them to others. This is sad but I understand it. It is amazing the diversity around the USA as far as different behaviors encountered in Churches and peoples.
Like you carol, I also have been sitting on the Orthodox/Catholic fence for a long time and wonder when I will decide for certain.
Where I live there are equal amounts of 100% white bread convert antiochian churches side by side 100% immigrant, russian, south india, syriac/lebanese, ethiopian churches where they are amazed if someone with white skin sets foot in the door. I am 50 miles from Fr Gregory and Presbytera Frederica Matthewes Green's Church and 25 miles from their mission in Westminster, MD.