"FlyerTalk directly documents Grand Hyatt Tokyo staff awareness: "Memo from WoH Concierge to GH Tokyo: Beware of guests using CS code without proper ID" — implying the property is actively watching for unauthorized Credit Suisse code use. A Hyatt Regency Tsim Sha Tsui guest received a pre-arrival email requesting verification, resolved only by replying from a CS corporate email. Financial-sector codes are the highest-risk Hyatt category. Credit Suisse (now UBS following 2023 acquisition) triggers additional suspicion because the acquiring company may no longer honor old CS codes."

"1. The policy is that you need to be an employee at the time of the stay. 2. If you booked a U.S. hotel, especially if it's a budget brand or if you had stayed at that hotel before, most likely they won't ask for ID and you should be ok. 3. If you are adamant about not gaming the system for ethics reasons, then you should pay the higher rate. 4. If any hotel does ask for ID, a photo of a company badge generally will not suffice. Given they are going out of their way to ask you, they will want verifiable proof that you're an employee."

"Very interesting, I didn’t know or think about the clauses, even though that seems very obvious now in hindsight. I work for Deloitte, so I’ve always wondered if other rates are eligible for us to use (Microsoft, Google, Nike, etc.) as contractors/consultants since we work with them on longer projects. I know and always see that the rate descriptions typically say “must be employee of company or present company badge/ID” or something of the sort. But besides that, my issue is that even if these individual properties have specific clauses in their corporate contracts mandating whether or not the rate can be used for personal travel, as well as by contractors/consultants, how are we supposed to see or know those clauses? PHS does not say in their corporate rate description (at least not for Deloitte and for several others) that they won’t honor non-corporate booking channels."