A few years back when I was 'just' a plat, we had made some reservations in London for Oct, but one of them had been mistakenly booked (online) in Sept. Imagine our surprise when a $350 charged showed up from a Marriott in London.

Called the Plat line. They took care of it and got the charge reversed. Said something about being a good and loyal customer.

To me the Plat and Plat Prem lines truly do treat you as 'important' customers.