I grew up in this environment. And for the most part, we were smaller congregations of farmers, town folks, a place where everyone knew everyone. And I can assure you, we did not have role playing going on. We knew each other way too well to know who was genuine or ever being a fake.
Now, I cannot claim what we have seen on tv in churches of 3 to 8 thousand people, where you will only knew a few members at most, they do not have professional role players. But I can assure you this much, in small congregations where people know everyone's LUGGAGE. If you are faking something, you could lose your business, your good name, everything you have worked for. Because small town people don't put up with someone not being genuinely who they are.
And when the Spirit of God flows during worship, altar call, it does not get any realer and genuine than that in a small town church atmosphere!!
I played fullback and middle linebacker in football, and had a full ride to Ohio State before breaking my leg in my final high school state championship game. Nothing could push me over/around nothing!! In my junior year of high school, I was so connected to the Spirit in this particular service, I was a literal live wire. I don't know who it was that was praying/walking around and touching those of us in worship, and I don't even remember how I ended up on the church floor. But when I awoke or came back to reality, my legs could not support me as they were just shaking, I literally crawled by pulling myself over the floor to a pew and forced myself up onto the pew. I do not know what you should properly call that, but I was connected to God like I had never been before that moment. And some how I ended up on the church floor with no ability to use my legs. If I was not overwhelmed-slain-whatever then there is no term for it. But I do know this much. The way I felt, drained like I ran a 26 mile marathon, boxed 15 rounds, whatever, NO HUMAN never had the ability TO DO THAT TO ME EVER!! It was only God who could do that to me and He did!!