That camera-panning looking for the contestant is all "for show".
Not a big deal, but the camera-person knows where all of the "chosen contestants" are sitting. All of that "camera panning" is "for show" to give the illusion that it's more "random" than it really is. And that the camera operator is scanning the audience looking for people that jumped up. NOT TRUE!
Producer Stan Blitts interviews every contestant before the show, in groups of 30, for about 20 seconds. He chooses one contestant from each group. Before air-time, each contestant is wearing a red number under their Yellow nametag. This is how they keep track of you. They seat the "chosen ones" in certain seats for that show, and based on your party size. Right before air-time, they ask you to tear-off the red number. My wife got called down, and we recalled later, the camera-operator looking right at us before the show. He was practicing where his 1st four contestants were sitting.