We recommend bringing about $800 US dollars, 2009 and newer, undamaged bills. It is accepted everywhere. They should be an assortment of $100s, $20s, $5s, and at least 40 in $1s. Use the $100s for the tip because the exchange rate for large denominations is better than $1s. You can use your credit cards at a few souvenir shops, but you’ll get hit with International transaction fees.