"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 haven't tried using discount codes w/ Hyatt previously but this is intriguing. Some of these codes are tied to various companies. Does anyone who has used these codes before know if Hyatt front desk staff ask for corporate ID upon check-in if a reservation is booked using one of these codes? For example, 99800 is linked to Daimler-Chrysler Purchasing..."

"I was asking who was eligible to use OUR corporate discount when the GM volunteered this information. Management is way more visible at the (rather small) PHT than at larger Hyatts. I know I'm highly likely to run into the GM or his chief assistant during every stay, especially since I'm usually there for at least a week. Hence, I often hang on to my non-urgent questions until I see them. Might as well hear it from the source!"