"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."

"I used a code at the Ritz in Tokyo. When I was asked for my Google code, I just straight up said charge me regular rate. The front desk said okay, but when I checked out they never updated it. I was at an AVIS in LAX a few weeks ago, when they asked for my Palantir proof; I just said charge me the regular rate. The front person tried to charge me an outrageous rate, so I just walked off and booked at National. My advice would be to try and book where they have skip the desk options."

"I really don't think you should be worried. I have never been asked for ID at any hotel including the PHT. In fact, all the front desk person knows is that you are using some type of corporate discount. You are right, you could have any of a number of connections to the company, vendor, contractor, applicant, spouse of employee or applicant, salesperson, client and the list goes on."