Ker-plunk
It takes years to build a good reputation and minutes to destroy one. Having destroyed it, what is going to persuade a pissed-off ex-customer to give you another chance?
That's Marriot onto my "last resort only" list, along with Sony(*) and RyanAir(**). And the only way to get off that list, is for one of your competitors to do something even more heinous. (And even then, there's probably space for two).
Now all I need is for a few tens of millions of other folks to start doing the same as I do.
(*) for their music-CD rootkit exploit and the weeks of hassle that caused me. Yes, I know it was a decade ago. That's the whole point!
(**) do you need to ask?