Survivor

I am not a huge fan of Survivor but my roommate watches it regularly. I noticed that the host, Jeff Probst, uses the words, "immediately leave the island" when instructing the villagers (or the carefully-selected actors) how to depart after they're voted out.

What if someone doesn't immediately leave the island? What if they shuffle their way out, taking a victory lap to squeeze every last second out of those 15 minutes of fame? Are they forcibly removed at that point? Is there a bodyguard there? Is Jeff Probst really a robot with a time bomb inside him, and at the slightest delay of a reject leaving the island,he blows up, killing everyone instantly? Does the band Survivor come out and play "Eye of the Tiger" until the villagers burst into a psychotic revolt due to the repetition?

This is why I'm here. I ask the tough questions.