ATM machines are found everywhere in the city, including at the majority of major sights. Cirrus, Plus, and NCYE are the most common networks. Use ATMs to withdraw money during the day in well-populated areas, minimizing the risk of robbery.
You can be almost certain that all banks will be open 9am–2pm Monday to Friday and 9am–noon on Saturday except federal holidays. Some branches have extended hours. Most banks in tourist areas will have the usual services for travelers, including redeeming travelers’ checks and currency exchange.
A credit card is essential for car rentals ...