"That's why "old country" Orthodox parishes never have pews (the Church is supposed to be a home, not a theater!), and there are chairs along the walls for the sick and weak (pregnant, elderly, etc.)...."
Those are always my excuses (well, not pregnancy) for using them when I'm in Greece! :)
Kolo, just take a look around you, when you are there, and you will see heads, with hair white as snow, of people who could be your parents, standing the entire 2-hour Divine Liturgy, and you will feel no desire to sit. :)