Maybe I am jumping in a little late... I don't have a credit card per say here in France, I have an international debut card, which means I can pull money out with it from money dispensers anywhere and I can but from Amazon etc. with it... But it is a debit card as it pulls money from my account rather than adding up to a bill I'd have to pay at the end of the month.
Sooo, maybe you could use that kind of card from Germany ? And it would still work... If you can buy stuff off the internet with your German card, you're fine.

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