You'll get plenty of recommendations for car rentals as many here all have their favorite go to company on island. Mine is http://www.sxmrentacar.com/ Been using Hertz SXM for over 20+ years wthout a glitch. Just booked them again for our May trip and July trip. Unlike many others the quote includes free Liability insurance and no add on fees. As an example my Corolla will run me $174.00 a week.