Foreign notes which have creases or marks are often rejected at many foreign exchange bureaus and banks.
For ease of exchange at a good rate make sure your money is in US dollars, Euros, Uruguayan or Chilean pesos. Avoid other types of currencies since it's difficult to exchange them.
Very many tourist-oriented businesses quote their prices in US dollars since the Argentian peso is always fluctuating in value.
Credit cards are accepted in most places but American Express and Diners cards are not common here and very few businesses accept these cards.
Tip: Carry your driver's license or a copy of your passport since most people here tend to ask for a valid photo ID in case you pay using your credit card. These two documents just work perfectly as well.
Withdrawals are expensive and limited to 3 withdrawals per day.
Withdrawal fees at most banks for Non- Argentinian ATM cards is US$ 10.
In tourist places its common to find that ATMs have run out of cash, so when you withdraw make sure to withdraw a sufficient amount to cover your needs.