Almost anywhere will pick you up but you can also get there for under $5 and considering what $5 means to us yet what $5 means to the people there makes calling for free rides seems futile to me. Not to mention before a first trip there I think many imagine Negril being big and not that you can walk everywhere or imagines taxi's being costly.
My humble advice is don't worry about contacting them before you get there. Negril is not that busy of a place that you couldn't call the day of, or for that matter IMO most places the hour of and get the same results if you decided after seeing one end to another and the life circumstance there that you would like the free ride.
