"Daimler Benz's Hyatt code (99800) is for the Mercedes-Benz parent company. Daimler has major presence in Stuttgart, Germany and significant US operations in Alabama (Mercedes-Benz US Manufacturing). Hyatt's European enforcement pattern applies: Park Hyatt Frankfurt/Munich/Stuttgart carry higher verification risk. FlyerTalk's Hyatt thread: "In Europe and some parts of Asia, proof has been requested 100% of the time." US domestic Hyatt Place: essentially never checked. Daimler later restructured as Mercedes-Benz Group AG."

"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."

"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."