A large majority of businesses and restaurants take MasterCard and Visa. AMEX is not widely accepted in SMA. However, Mexico is a cash-based society with many places only accepting cash. All relocation tour activities are covered with the purchase of your ticket, we do recommend bringing about $500 cash to use for additional leisure activities and dining. ATM machines are readily available at banks so you can get additional cash if necessary. Note: The ATM machines distribute pesos, NOT US dollars. Using a foreign debit card, a maximum of $250 can be withdrawn from an ATM machine twice a day. There are ATM fees per transaction when using a foreign debit card at the ATM. Check with your bank on the maximum withdrawals allowed per day. ​ Contact your banking institution to determine if these fees can be reimbursed, plus be sure you make them aware of your travels and use of your card so you do not receive a fraud notice, or are blocked from using your debit or credit card.