"General Motors' Hyatt code NC12964 is for one of the world's largest automakers. GM HQ is in Detroit MI — Hyatt Regency Detroit handles GM employees regularly. FlyerTalk's Hyatt verification pattern: 50% ID check rate across international stays, primarily at Park Hyatt and Grand Hyatt properties. Michigan/Detroit Hyatt properties are familiar with GM employee badges and may request them. US domestic Hyatt Place/House: minimal enforcement. No NC12964-specific denial documented."

"I get randomly asked for my id if I check in at peak times, if it’s late or super early morning they just let it go. I’ve showed my corporate email on my phone for proof before"

"We are pleased to note you have a future reservation on xxxxxx, 2010 made through hyatt.com. I do kindly ask that you bring your valid working ID in order for us to be able to confirm the corporate rate at time of check-in which will be cross referenced with the company. Unfortunately of late we have been experiencing misuse of some of our corporate rates, with your company a target and we have had to implement tighter controls in this regard."