Quick question. My wife and I are traveling to Argentina in late December to visit family. While we do plan on bringing dollars to exchange at a cueva, there will be times where it is more convenient for me to use my Visa card - that said, I don’t want to get too screwed on the exchange rate. Does anyone know if US credit cards just use the official rate, or use one of the other rates? Infobae publishes multiple rates, including Banco Nación, Libre, Turista, con Liqui , MEP….its all a bit confusing.