Our plan is to rent a car from Charlie's and then head down to Rincon/Boqueron for a few days. We are going to head back and spend our final night in San Juan. We plan to rent the car from Charlie's main office near the airport in Carolina. I see where they also have an office at the Marriott in Condado. Would be a good idea to RETURN the car to the Condado location? I thought it might be closer to our hotel location in Old San Juan. Or does it really not make much of a difference? Thanks!