Each country has a single or sometimes multiple official currencies. Although some popular tourist spots might accept major foreign currencies like U.S. dollars or euros, it's advisable to use the local currency for everyday transactions to receive fair exchange rates. Currency exchanges are usually accessible at airports, banks, authorized exchange bureaus, and some hotels. Withdrawing cash from ATMs can be convenient but watch for foreign transaction or withdrawal fee charges from card issuers. Using credit or debit cards is generally safe in urban areas, but always notify your bank to avoid card declines. Carrying a mix of cash, cards, and possibly prepaid travel cards helps maintain accessibility and security for spending needs throughout your trip.