yes that is the best place to score weed in Jamaica - and coffee! I bought 100 pounds of coffee at $4/lb when I was there awhile ago from a coffee roaster in the town Section, Jamaica in the Blue Mountains. US citizens are allowed to bring in 100 pounds of coffee to the US with no import duty, though that may have changed in recent administrations.
when I was in Jamaica all of the rastas that I met went on and on about American weed and how great it was, and asked if I had any seeds for them