Interesting. I've encountered DCC at at least four eateries in HK in the last three or four months. Not a lot - one place was the Burger King near the Hung Hom concert venue (ironically, a Japanese shop that was in the same food court as the BK didn't charge DCC even though they seem to use the same payment system). Another is Al Molo in Harbour City. There was a famous hotpot place in TST (name escapes me but it has those old school cone-like hotpots). I'll check my Chase disputes for a full list. I think there were two cases where I was surprised that DCC was offered and customer choice was adhered to (one of which is the Teawood in Central and another was a Korean place in Soho area).