There are a few things to take note of when it comes to using U.S.-based cards in Brazil. Card duplication and fraud aren't uncommon across Brazil; try to withdraw money at banks as opposed to open ATMs, and be mindful of where you swipe your card. All Brazilian cards have a pin (senha) that the cardholder inputs when completing any transaction. Your American credit card likely does not, which may cause surprise or confusion amongst locals, but shouldn't affect your ability to purchase things. When paying at a restaurant or bar, the host should bring the card reader (maquina) directly to you to complete the transaction. Never allow someone to take your card and walk away; remember, a local Brazilian would always need to input their pin for a transaction to go through. Finally, many foreigners have found that when paying using a debit card, you need to run it as credit (credito) here in Brazil. We're not sure why, but that's that.

Brazilian vendors will probably know you are a foreigner when you ask for the price, and will thus offer you a higher price than normal. Don't be scared to politely barter! "Pode ser vinte?" If you know they are over-charging you, don't buy it. You can find it elsewhere! Also, at many beaches there are various vendors renting umbrellas and chairs for the afternoon. Depending on the city, day, and the number of people you are with, the price can range from 10-15 reais. Tip: always ask if the chair is free if you order food!