It isn't just Accor. In the last year, two Intercontinentals in Beijing and the two in Hong Kong all tried to pull the DCC rip-off on me. One of the Beijing hotels hides the cc charge slip and ask your to sign a long page of small print authorizing DCC. Bottom line, do not trust anything you are told and read EVERY word on any invoice AND demand a copy of the charge receipt. The desk agents are trained to trick you and that is the truth.