"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 don‘t want to violate the T&C and risk my LTG status and account being closed….so I proactively contacted MHC and explained the situation. Came back with the standard and expected answer quoting the T&C and needing to work for the company and provide company ID upon checkin. but they also contacted the hotel to see what can be done. Will be interesting to see what they come back with…"

"I use corporate codes all the time and never get asked. I shouldn’t be using them but, hey, it is what it is. The risk is you get that front desk agent (or even manager) who goes “I see your with the Coca-Cola rate, can I have your corporate Id please”? Has never happened to me yet but it is a risk. So book accordingly."