BUENOS AIRES, Argentina--(BUSINESS WIRE)--McDonald’s customers in four Latin American countries are getting a little richer with each McCombo they buy. Arcos Dorados, the world’s largest McDonald’s franchisee, is offering customers at its McDonald’s restaurants in Argentina, Chile, Uruguay and Peru a total of more than 10 million in promotional “Billetazo” currency notes. Each customer buying a McCombo will receive an instant win Billetazo note, which can be redeemed for a discount on a future