Discovered DCC in the UAE (Abu Dhabi) for the first time now.
It was at a restaurant, luckily I was there to enter the PIN. It was compliant (asking to pay in Dirham or my own currency) and it seems all is fine after I pressed Dirham, but it's yet another country which seems to be on the list where one has to be careful. At least no DCC spotted at ATMs there yet, but I guess it's just for the time being