It's a fairly common thing in Greece now because it saves the couple money.That is a really great question!
I have never heard about a joint Greek Orthodox wedding and baptism being done in the same ceremony...
Yeah that's pretty much all it is. I recommend gifting money so you can give a big enough gift for both the child and the coupleIt's a fairly common thing in Greece now because it saves the couple money.
I don't know what else to say other than the wedding will happen first because the couple has to be married to baptize their child and then the baptism will happen. After both are finished you will have a big celebration.