"hotelcorporatecodes.com places Fiat Chrysler (now Stellantis) in the "Sometimes" verification tier. A live booking test confirmed the code resolves to approximately 7% savings. The code's rebrand from FCA to Stellantis means two overlapping codes circulate publicly, slightly elevating hotel-side suspicion. FlyerTalk's general Hilton thread notes that automotive OEM corporate codes are moderately checked in Detroit-area properties where staff know the company well enough to ask."

"My spouse and I usually use his corporate leisure rate for reservations at Hiltons around the world and we have never once been asked for evidence of working for that employer, even when the reservations are in my name."

"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."