By the way Maestro is a debit card system I used it without any issues in many countries in the European Union.
Always worked, and I even lived in a number of these countries without the need for local cards.
Still, the OP asked for Master or Visa. I'd advise to carry one of each from different banks.
Btw. specifically check how you can take out larger amounts abroad.
There are banks which have limits and restrictions for safety
Usually these limits can be increased upon agreement.
Further check what system can be used to increase the limit should you be abroad and need a large sum at once (Simple phone
banking system, fax, email).
Might help if your bank knows upfront where you travel to. Otherwise they may think someone stole your card if it's suddenly in a for you previously untypical location.
Best is to have a direct contact at your bank branch who can directly contacted.
Call centres offer mostly unpersonal standard "services".
Enjoy your trip!