A zero-fee card can still be expensive
The visible card fee is only one part of the cost. The exchange rate used by the bank can matter more, especially if you convert currency frequently.
Compare the final amount debited from your account, not only the line that says commission.
Watch the ATM and the card issuer
An ATM operator may charge its own fee while your bank charges a separate withdrawal fee. Both can apply to the same transaction.
When a terminal offers to convert the transaction into your home currency, check the rate carefully before accepting.
Transfers have more than one price
International transfer services can charge through an explicit fee, an exchange-rate margin or both.
The useful comparison is how much money arrives at the other end.
Planning note: Rules, prices and entry requirements change. Verify time-sensitive details with official local sources before you act.