Seeing a big uptick in DCC in Hong Kong in the past 4 or 5 months particularly at restaurants (Mak Mak, Beef & Liberty & Big Fernand). Always try to stress to staff to please process in Hong Kong Dollars and they almost always say:
1) Yes, sure, we always do (but of course it goes through with DCC added)
2) There’s not choice on the terminal

Had success disputing with Chase but it’s a lot of paperwork, postcards & voicemails from India (very hard to call back).