How does this square with the Bonvoy Terns and Conditions ?

"2.7 Foreign Exchange.
The amount of Points earned at Participating Properties where a non-U.S. dollar currency is used will be calculated based on Qualifying Charges converted to U.S. dollar at the exchange rate selected by the Company. This may be the foreign exchange rate used by a Participating Property at check-in, at check-out or another rate selected by the Company and may not be the same rate used for currency conversions on the Member's folio."

(the Company is defined as Marriott International, Inc. and its subsidiaries, including Marriott Rewards, LLC and Preferred Guest, Inc)

Also, what controls are in place to ensure that the set exchange rate is equivalent, as mandated by the T&Cs ?
"2.1 Earning Opportunities at Participating Properties
2.1.a. A Member will earn:
i. Ten (10) base Points for each U.S. dollar, or the currency equivalent, that is incurred and paid for by the Member on Qualifying Charges in accordance"

Terms & Conditions | Loyalty Rewards Programme | Marriott Bonvoy