I am pretty sure that some (if not most) of the longtime visitors to Negril have local friends/acquaintances who periodically meet with an obeahman or obeahwoman for various reasons. I know several older Jamaicans who have told me of their experiences with obeah - including some successful encounters and some not so successful encounters.

Here is an interesting article in todays Gleaner about underground tourism in Obeah.
http://www.hospitalityjamaica.com/news1.html