Congrats! ^

This has potential in case they don't honor. I don't think Chase likes to fight this publicly and be accused of not honoring terms of their credit cards. It would be probably worth some serious dough to them to have this go away. Or they would simply persuade Hyatt to honor this deal for time span x and then proceed with the scenario I brought up earlier (which is what I would see as the most elegant option for them to get out of it).