"DaimlerChrysler's Marriott code DCX was the merged Daimler-Chrysler entity code (1998-2007 merger). The company later split back into Daimler AG and Chrysler. The code likely remains active in Marriott GDS with one of the successor company relationships. Auto industry codes at Marriott carry medium risk — properties near Auburn Hills MI (Chrysler HQ) and Stuttgart recognize auto company employees. FlyerTalk notes that European Marriotts verify auto company codes more frequently than US properties."

"My last couple of corporate RFID cards had no company name on them for security purposes. My current company doesn’t do business cards. I use my Bonvoy card for corporate travel to get the points. I’d have to write them an email standing at the check in desk, I guess."

"I always see people saying that they aren’t able to do mobile check in. I’ve only stayed at two Marriott hotels where I tried to do mobile check in ( both of them never been to before) and they both let me without having to go to the front desk which I was really happy about because I had lost my ID and didn’t know how I was going to check in. Also I think I only had about 20 nights at the time, I usually stay with my boyfriend because he’s titanium."