Sabrina did a great job of arranging and adjusting our airplane and hotel reservations for Brazil and Argentina as we planned and replanned our trip there in November 2011.  She saved us $5,000 just on the plane tickets and got us a good hotel rate (and beautiful front-on beach view) in the pricey but non-touristy Leblon section of Rio.  Her suggestion of lunch up in the hills at the Hotel Santa Teresa was inspired, a highlight of our stay in Rio.  When a hotel recommended by Argentine friends in the Mendoza wine country was not available, Sabrina came up with an even better alternative.  She did a great job for us in all respects!