"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 work front desk and it seems like management is really pushing to check IDs for any special rate. Personally im lazy and also don’t care that much to start a confrontation so I only verify govt rates and employee rates, but yes it is being enforced more harshly. Corporate rates I guess are easy to find online and thus abused. Again, I don’t care that much because they’re still pricey anyway !!"

"I swear the front desk employees are trained to resist and encouraged to lie. They try to save the rooms for members with higher status or complainers. I've booked King rooms and they'll assign me a double or a queen. The first rep will tell me they're fully booked and there's nothing they can do. But once transferred to a manager, King rooms magically appear!"