We used Miami Fast Park for years, and were extremely satisfied with their service, until they unfortunately went out of business. Now, we use Park and Fly the past few years and have also been very pleased with their shuttle service, as they are always extremely prompt. We have had some bad experiences with it taking FOREVER for shuttle service from the airport to the hotel. At this point, I think we have just decided to take the later flight from Miami to SXM and just drive down that morning and use Park and Fly again.