We are planning a 3 week trip to Lake Arenal in Costa Rica summer 2014 and need to rent a car and definitely have a GPS. Our last trip, we used Alamo and rented small SUV for 8 days, which was over $700 with GPS, taxes, etc. It took us over 2 hours to wait and get paperwork down for rental, which had been reserved ahead and the6y require you to take out extra insurance even if you have credit card that covers such for a foreign rental. They ran out of Garmins and we had to wait longer for an off site company to bring us a Garmin. The Alamo rep did program the rental Garmin for us for all of our destinations, which helped considerably. I'm considering buying Costa Rica road maps to download to my freestanding Garmin and just take that with us instead of renting from car company. Do you have recommendations on car rental company and/or Garmin?