If you are looking for some good jerk chicken or conch soup, Biggas in Green Island is a great stop partway to Negril. Plenty of space to pull over and you can chill on a rustic bench at the back of his jerk stand and gaze out towards the Caribbean and you enjoy. You could also stop at half moon beach which is about 20 mins drive from Negril near Rhodes Hall. They have their own private beach with lounger, wonderful snapper sandwiches along with other menu items and good drinks at the bar. Really nice place to spend a couple of hours or part of a day.