I also recommend Visa for trouble-free and universally accepted money management. Whether making cash transfers or purchases, abroad or at home, I charge EVERYTHING with my two MilesOne Visa cards - one for personal expenses, the other a Business Visa for deductible expenses. For every dollar charged, two "flyer mile points" are awarded.
On a typical year, we accumulate at least 150,000 flyer miles - redeemable for either free flyer miles, cash, or merchandise. I would strongly advise against using bank debit cards in any places other than controlled ATM machines however. Too easy for any skilled hacker to drain your cash accounts by culling personal password info from the data terminal.
True Blue . . .
sold the Nauticat