we all know what they say about opinions here's mine as a traveler since 74. yes a 19 year old can be overseas fighting for their country and in most cases the environment has some structure. i would go with grand pineapple in case they will feel safer hanging out there. if they want to venture out they can do that also.
this is not the Negril of 40 years ago when i started visiting . many in Negril have become americanized and many but not all are not the kind,sweet gentle people of years ago.