The driver "Sammy" was met at the Welcome Bar amid the chaos of taxis and other shuttles and he somehow had the vehicle close by. We hopped in and were driven to the ferry terminal quickly and without incident. On the return from Isla Mujeres we caught the ferry before the one we wanted to catch so we had a short wait. Sammy showed up again and drove us to the Cancun Airport again quickly and without incident. Very professional service. Glad we chose discoverymundo.