"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 as a consultant and frequently ask for and use my client's rates (at their insistence, since I will be billing them back). I have been asked for ID maybe one time in 15 since February, when it was announced in this forum that rates would be ID'ed."

"I regularly stay at a renaissance once a month on our DTC rate and have done mobile check in but always end up at front desk. One time the front desk was like oh. We know you as you have been coming regularly, but I need to double check your id. I think it’s because someone shared it online and now it causes random checks for rest of us."