"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 don’t really know how they truly enforce this. A lot of companies don’t even put the company name or brand on ID cards anymore due to security concerns (if you find a card on the ground it’s a lot harder to know where to use it). In 20 years of traveling for work I’ve only been asked for a form of ID one time, which was in Germany, and sending the front desk agent an email from my corporate email address took care of their concern."

"Just FYI, the Hyatt Regency Kiev does require Corporate ID upon check-in. My corporate rate is 220 EUR instead of 410 per night and they were quite insistent on getting the corporate ID. Good thing I had it with me."