Greek Heritage/orthodox help

My FH was born to a Greek family who attended Greek Orthodox Church. He was baptized GO when he was about a month old. He moved to another state (where I live) ten years ago. His family who was practicing GO are since deceased, and he has not attended a GO church in many years. We are due to be married in 6 months. I was baptized ELCA Lutheran, and we are having our wedding in a Lutheran Church, one reason being there are NO GO Churches in my state. We are wondering if there is anything we can incorporate into our wedding to help honor his religion or his heritage without it being offensive to the GO Religion or church. My pastor is pretty much ok with doing whatever we'd like, but we need help. Also looking for ideas for our reception. We did discuss Stefanas which i read can be an insult to the religion if not done by a GO priest. We also want to do "Witness Pins" and the "Jordan Almond odd number." Anything other ideas anyone can help me with?