Did a 3 day trip to Madrid/Spain and when using my CSR DCC options popped up on literally every transaction at touristic places (ie every place but the supermarket) even when just tapping the card on the NFC reader (ie 99% of the times). In Spain you are given full control of the POS terminal so tapping 'EUR' instead of 'USD' was never a problem. At checkout in the aloft I probably was not tapping the screen hard enough to the agent said 'you want Euro, right?' When I nodded vigorously she said 'this USD stuff is cheating, never ever accept it'