Rumghoul,
Forgot to mention, renting and driving a car in Jamaica I have found to be much easier than many suggest. Years ago when the rental cars were old and beat up and with standard transmissions that was a challenge but today's vehicles are newer with automatic tranny's and air conditioning is way easier to navigate. Yes there are dangers involved and yes most important that your credit card will cover full insurances but if you rent from a reputable company, drive carefully and completely sober then for me I think renting a car is the way to go!!