No, I'm not going to sue anyone - life is way too short for something that silly.
I received an email reply from Marriott saying they would like to speak by phone to "ensure my concerns are addressed as I desire". Hmmm - I desire a million dollars.
Now, after venting sufficiently, and being much more P.O.'d at the FIA than Marriott, I need to figure out exactly what I "desire". An apology. A root cause so it doesn't happen next year (the race isn't until the 25th next year so I need to wait at least a week to hunt for reservations). Maybe a credit for the room rate difference - perhaps in points at a reasonable exchange rate. Or an upgrade in my award travel later this summer...