Originally Posted by
greglvnv
Just done with my stay in Sao Paulo and all I can say is that Amex had a 100% acceptance rate and just a general recommendation: if you want a piece of mind and no DCC troubles, give up your Visa/MC, at least here.
Makes sense for Brazil. But it seems like much of the world doesn't take AmEx. I know in Ireland it was basically limited to vendors at the airport, hotels, and steak houses.