COMING FROM CENTRAL NJ. FLYING OUT OF JFK TO SXM ON MAY 7. HAVE NOT FLOWN OUT OF THERE BEFORE. IS THE ON AIRPORT LONG TERM PARKING SAFE? DO THE SHUTTLES RUN FREQUENTLY? WOULD I BE BETTER OFF PARKING IN THE OFF AIRPORT LONG TERM LOTS LIKE SPOT ON? I HAVE CHECKED ON LINE AND REVIEWS OF EACH ARE MIXED BUT COST OF OF OFF SITE IS LOWER. ANY HELP WOULD BE APPRECIATED. <img src="http://www.traveltalkonline.com/forums/images/graemlins/duh.gif" alt="" />