Some of my fondest memories are of one of our old Russian parishes. There was an old Russian babushka (grandmother) there who, when children were misbehaving, would shake her cane and them and scold "NO PLAY!" The children would be chastened by her into silence standing in one place.
Then, immediately after the service, they would all crowd around where she sat in the narthex, kissing and hugging her while she dispensed pieces of candy, kisses, and pats on the head.
Being a Serb, I can perfectly relate to that! :-) It's always that emphasis on a loving correction!
Thank you Agrarian for expanding, as usual, and making some of our statements more vivid and clear regarding pharmamom's first visit and advice regarding children.
The question of which Orthodox church has not been raised. For those who are Orthodox, it really doesn't matter because we know the Divine Liturgy, so even if it is sung in a foreign language we know what is going on. But to someone who is accustomed to being in an English-speaking church and then coming into a church where the majority of parishioners is Greek or Slavic or Arabic, the experience may be a bit puzzling. So, I hope the church you will go to is in English, or at least a mix of English and another language. I am biased -- I like the intonations of the Slavonic Liturgy (it's a 9th century Slavic dialect spoken by Southern Slavs that was elevated to a liturgical status by Greek brothers SS Cyril and Methodius), because I understand it. Having said that, I have been to Greek churches and even a church in Japan and had the same experience as in any Russian, Bulgarian, Urkainian or Serbian church.
One thing Agrarian wrote that is absolutely and undeniably true is that when we walk into our church, we come home. We kiss the Host and (Serbs at least) kiss each and every candle we light for our living and the dead. And, the church is our children's home too. They receive Eucharist as we do.
Please, do not feel awkward when you walk it. People will not judge you. If you don't know what you are supposed to do, it's okay. After the Divine Liturgy, people may approach you and welcome you. If you have questions, ask. We don't proselytize, but we will readily talk to those who are interested. :-)
Our prayers are with you.