Hi! I'm extremely excited about "Riley Colton," negl. Reese wants that Golden Ticket, gdi!
Puck has 100% seen the search for a son reality show. I don't know if he'll recognize him right off the bat, given everything that will be happening, but given enough time and exposure he will be like MAN I KNOW YOU FROM SOMEWHERE etc etc.
As you've mentioned, Reese is going to be after Riley from the moment he recognizes him. tbh, I'd love to say that Reese has had his eye on Riley since they had a run in at their terminal, so he's aware of his existence before the crash and can have getting Riley out of the plane and into handcuffs as his first priority. Poor guy, handcuffed on a dino island. :/ Someone is going to have to help fix that! In contrast, Reese has zero idea about Riley's real life or background or even that his father has a reality show based around finding someone else to give his inheritance to. All he cares about is that Riley Colton killed some people with a bomb, has a huge bounty on his head, and he's taking the whole thing for himself once he brings the kid in.
Casper will side eye the hell out of Reese for handcuffing a kid in a plane wreck situation, but won't interfere unless someone hasn't interfered by the time the dinosaurs enter the picture.
Cait will feel badly for Riley, and has probably seen the reality show before too but not often enough to put two and two together.