Beware if you stay at a Canadian Courtyard or other Marriott property in Canada that gives $10 F&B credits in lieu of free breakfast to Platinum Elites. You will be probably lowballed and given credits worth $10 CAD instead of the $10 USD mandated by the Marriott Rewards rules, which represents a difference in value of 30% if fair exchange rates were to be applied.

I had to argue for it to be $10 USD at the check-in desk and when redeeming the vouchers at the restaurants and they ended up counting them in USD but at the hotel's cash exchange rate of 1.15 CAD per 1 USD. So I got $11.50 CAD out of each voucher.