12 EUR payment at a cafe at dublin airport:
I received no choice to pay in EUR or USD, bill said 14 something USD. I told them to cancel it and recharge in EUR. He refunded and tried to charge in EUR, but they couldn't make this work so I had to go with USD charge.
However, I saw later that they did the refund in EUR for the USD amount (14 instead of 12), so actually I was better off.
Kind of funny that they can't charge in EUR, but they can refund in EUR