I dont travel in taxis often in Negril but the part of the island where I stay the route taxis don't move off until they have 5 passengers loaded then they drop off and pick up on their route One passenger in the front and 4 in the back. If I am going to charter I usualy offer the route fare x 5.
eg. 140JMD x 5.= 700JMD.
I think thats a fare fair.
I tip if it was a good drive and take the number for future use
good to get to know reliable safe taxi drivers .
B