"FlyerTalk's Hyatt corporate codes thread identifies code 90010 as resolving to Li & Fung Trading Ltd in Hyatt's system, not Oracle directly. This creates a mismatch risk: if a guest claims Oracle employment but the code resolves to a different company in the system, a suspicious front desk agent could escalate. Park Hyatt Sydney has been documented liaising directly with company travel desks, and Andaz Tokyo has required badge, business card, and email confirmation."

"Just call them ahead of time to ask about their policy. I did this recently with Hyatt Da Nang. I've never been questioned about my badge, ever."

"I have been denied the rate at the Park Hyatt Buenos Aires because had no proof I was entitled to use Credit Suisse corp rate (240 $ instead of 450 $) Had to pay the rack rate...ouch"