"Siemens has multiple Hilton codes (D323009803, 323009803, N0079268, 302844100) reflecting different business units and tiers. hotelcorporatecodes.com notes Siemens in the "Sometimes" category at Hilton. UK/Europe Hilton properties have increased enforcement since 2022 — Siemens has major Munich HQ operations where Hilton properties regularly encounter Siemens employees. FlyerTalk's London Hilton enforcement thread documented: "show a company ID card, or pay the full walk-up rate." German Marriott properties near Siemens facilities: medium-high risk."

"I know that previously the Hertz IBM rate was always fixed in the mid $30s for a full size vehicle with last car availability. A minivan was $175/week in Orlando even during President's week when the going rate was about $1,200. This is probably why Hertz and at least Avis has been more strict. I have found Marriott to be very strict, especially at key locations, when it comes to the government rate. Marriott wants travel orders, a government ID, and/or a government credit card. I found Hilton to be less strict for those government rates."

"I would contact your corporate travel. I know some companies have one code for employee business travel and one for employees and their families. Some use just one for all. Shouldn't be too difficult to email to your travel team to get clarification."