I like having time at the start to 'meet and greet', it makes the time more personal and less like a business meeting.
I am quite a shy reserved person when it comes to meet and greet in an open door as such.
Apparently you have to smile. I tried it once, personally I think it's overrated.
Only joking.
On a serious note I actually sit at the back of our church. I do so for a reason. That reason being that our city has a lot of homeless people, drug addicts and alike. Undersirables as the world would call them. I meet and greet them. That edifies me.
Seeing broken people come into our church and I can sit with them. I've seen a few come to Christ, not because of what I have done but because of what Jesus has done, through me and others who have also come alongside.
Also seeing believers who are struggling and they meet with God and are released, set free. Amazing
Seeing people baptised. Now that does put smile on my face a big big smile and a praise in my heart.