"McKinsey codes at luxury Hilton brands (Conrad, Waldorf Astoria) carry higher verification risk. One Fishbowl user was asked at a Westin SF for firm ID, resolved by offering work email verification. Hilton verification is hit-or-miss, roughly 20% of the time across legitimate corporate codes. Code is flagged in industry databases. Properties near McKinsey offices show heightened scrutiny."

"I was asked for my work ID when checking in at Hilton Tokyo in June on a corp rate."

"I run a Consultancy and work with clients across both Public and Private sectors. Many years ago (15?) a UK Government client (they are still an active client) shared a Hilton Corporate Code, which was to be used for stays required when working with them. This code gives access to (but not 'On Duty' rates). I use this code regularly across the UK (mainly London) without issue, staying most months at various London Hiltons."