I got a little bit of good news regarding the DCCing of my hotel bill at the Regal HKG Airport Hotel. I wrote the front desk manager, complaining about being DCCed without my consent, especially after explicitly telling the front desk clerk NOT to charge my CC in USD, but in HKD (I never got a CC signature slip w/ the check boxes, just a hotel bill/invoice A4 printout in HKD). He apologized & stated that refunding me the $4.24 (33 HKD) DCC overcharge would be complicated, so he offered me a room upgrade & executive lounge access on my next stay there.