If you mean "Petit Casino", the small grocery store in orient, they were treating Euros same as dollars last Feb. Given that the exchange rate is still close, I would guess nothing has changed. Having a fistful of dollars back when the exchange rate was 1.3 to 1 or so, and paying in cash was a significant savings over a vacation, but now that they are close, not so much. Still, for all everyday purchases, having dollars at hand is easier.