Why tell them you are leaving a few days after you actually leave? Just curious. In All of our visits it's so common for us to be asked when we are leaving. Is there a higher risk to be robbed your last night?
Spent lots of time with locals most good some bad there thinking is on your last night you won't change your flight to wait for the police to show and investigate what happened. Sometimes it can take the Negril police a long time to show up.