ATM cards work great as long as your bank does not charge too much for each transaction. I get 5 free withdrawals each month which makes it wonderful!! We got the best exchange rates using our ATM and our LLBean VISA was the best. It had NO transaction fees and the best rate. I actually made withdrawals with my VISA and my Mastercard at the same machine, at the same time just to see if there was a difference. Chase Mastercard charged, but Chase VISA with LL Bean did not. Strange, but true!! I had asked customer service for both cards about hidden charges and all had said there were none. These charges are so HIDDEN that only the computers in charge know about them!!!
Remember to notify them of your trip or they might BLOCK your card until they can talk to you to verify that you are the one using the card!!!
Take at least one extra card.
Record all the important card numbers and notification numbers on a separate sheet.
leave a copy of everything at home with someone you can reach in an emergency.
I also took a few traveler's checks to use in an emergency. They are not readily accepted, but there are American Express offices in some places where they could be negociated.
Have fun!!!