"Deutsche Bank's Marriott code DBK is a major European financial institution code. FlyerTalk European hotel enforcement threads note: "European Marriott properties near financial centers (Frankfurt, London, NYC) are among the most likely to verify corporate codes." Deutsche Bank's Frankfurt/London/NYC presence is well-known to hotel staff in those markets. hotelcorporatecodes.com: "⚠️ Sometimes." US domestic outside financial centers: low enforcement. Europe: medium-high enforcement."

"I think the generic 'show corp id' designation means show the company business card. I think a lot of us don't have them or, if we do & we're not going to an office that we'd need to show them, leave them at home. I worked for some F500s that didn't require corp ids with shiny smiling faces on them & others that did; same with company credit cards. All, however, provided biz cards when working for them."

"I had to change my email to my personal email account. My IT sucks, I have had so many joe.smith1 to joe.smith9 at my corporate name dot Com. Why I like to get my folio in person and on my email. Miss a receipt and your expense report gets rejected. Only been asked once for corporate proff, but I am nice to the staff and explain what's going on before they get a chance to ask. IT still has not figured out how to link everything to Concur for hotels. And it's a huge company"