My failures with the Plat override did not involve any kind of major worldwide event or other situation (e.g., natural disaster or whatnot) where the hotel was likely to have lost control of its inventory.

I know there are others here who have had successes with it and may assign value to it. For me, it doesn't really have any value...that's why, to me, the difference between Gold and Plat is basically the wine and 2 points per dollar spent.