Originally Posted by Majuki

Did the receipt just contain the DCC verbiage or was it denominated in USD? I think this is similar to my experience at Chung Yo Department Store in Taichung. You can clearly see the DCC wording, but the charge is in NTD and there is no mention of USD on the receipt. While the DCC amount is held in this case, as others have pointed out, the transaction will post without DCC.

You have to worry when you get final receipts with: [ ]HKD [ ]USD and nothing checked (such as carbon copy slips), [X]USD checked, or DCC verbiage with a USD amount/exchange rate included on the receipt. For instance, percysmith and I ate at Greyhound Cafe on Saturday night, and we were presented with the carbon copy charge slip. If you tick [X]HKD AMOUNT, nothing will happen. There is no cashier interaction with the terminal regarding currency selection after running the transaction.