Likewise, I haven't been forcibly hit with DCC since I became aware of it a few years ago. I haven't yet filed a dispute with Chase because the one time I got hit with DCC at the Frankfurt Marriott in March 2013, I complained to the hotel's general manager who compensated a more valuable amount of Marriott Rewards points. I wasn't as vigilant then - you could call me DCC naive - and I thought DCC was opt-in or at the very least something where the merchant gave a transparent choice.

The only other time I got hit with DCC was July 2011 at the Venetian Macau. Again, I wasn't aware enough to know I had been hit, and it was a live and learn situation. I didn't think I had recourse at the time. If the same thing were to happen to me today I would deface the receipt and dispute the charge. I am proactive about specifying local currency up front, and not buying the lies of "Oh, that rate is just for your convenience." or thinking that the check box will be respected in China, Macau, or Hong Kong. (If you see the check box there, you've been screwed already.)

I think we can help each other out by editing the wiki with country-specific information and advice on how to disable DCC on various payment terminals.