"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 mean, you can book the rate, but 100% PH Tokyo requires proof of employment. I had to email from corp domain and provide a business card (Dec 2022). If you show up and can't provide proof of employment, either you'll be paying a very expensive full price for your stay, or they'll invalidate your reservation."

"I was referring specifically to a corporate ID. I know international properties ask for passport. What I mean is that I have always been asked for both my corporate ID and personal ID every time I've used a corporate code at an int'l property."