Marriott International said Monday it will triple the number of hotels it has in Mexico over the next decade as the Bethesda hotelier seeks to exploit demand in developing countries, where access to capital can be easier than in the United States The deal with Pulso Hotelero to open 36 moderate-priced Fairfield Inns starting in 2011 will increase the number of Marriott hotels in Mexico from 19 to 57 across five of its brands....