"HotelCorporateCodes.com rates the Wells Fargo Hilton code as "Sometimes" for ID verification. Hilton verification is inconsistent — approximately 20% of stays trigger ID checks for corporate codes. Wells Fargo's massive presence in San Francisco means properties there are familiar with the code and its legitimate users. No specific reports of being denied or charged full rate. Business card or work email typically resolves verification requests."

"Hilton and Marriott Japan actually do check to ensure you qualify for any special rates. They also scan your passport too just FYI. It's not the wild west out here. Be prepared to prove you are eligible for the code or have the rate switched if you can't. Hope you got a business card from your company."

"Thanks for the prompt response. It's odd - the difference in the rate I booked and the next cheapest Hhonors rate was only £20! It just doesn't seem worth the effort of protecting even if I had, somehow acquired the code when I shouldn't have. Do please report back on your stay - will be interesting to note if you are also asked for some ID."