"WPP Group's Hyatt code (10167) is for the world's largest advertising holding company (parent of Ogilvy, JWT, Grey, etc.). WPP has a major London/NYC presence. Hyatt's enforcement pattern: Park Hyatt and Andaz properties in London and NYC carry higher verification risk for corporate codes. FlyerTalk's Hyatt thread documented 50% check rate at Park Hyatt across multiple countries. WPP's diverse subsidiary structure means hotel staff may have difficulty confirming WPP employee status vs. a subsidiary employee."

"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 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."