No, I am not suckered, even when they have much trouble understanding, when I tell them the error of trying to bill my credit card at a 1.85$ Rias per their dollar exchange rate for example. Plus there is a 1% Service + 2%Transaction fee added by the Banks in the past.
If they want to put local currency down on the credit card, they should do it at the official rate of exchange. NOT the special Marriott rate! .

Interesting, when you make the reservation, rate is quoted in US$, but their hotel billing is in the local currency and they then convert at their 'special' rat to our disadvantage.

Sorry if this is confusing like at the Front Desk on Check Out and the Clerk has trouble understanding what you are trying to explain. Certainly Management knows and is usually NOT around at that time.