Guys, I checked with the event host organization (AMIPCI). Here's what we must do: Once you have your baggage and exit customs, you will see some booths that are identified as "Servicio de Taxi autorizado". You tell them your destination, pre-pay the trip and walk outside. You then look for the taxi rank (it is identified and the cabs are painted yellow and white, with graphics depicting a plane on the doors. You should be careful, when pre-paying the fare, to specify that you want to go to the "Hotel Sheraton Centro Historico, frente a la Alameda Central" (because there are three Sheratons in the city). Hope this helps, regards Tony Harris