"Alibaba's Marriott code A7A is for the Chinese e-commerce and technology giant. Alibaba employees primarily carry Chinese company-issued credentials which Western hotel front desk staff are less familiar with verifying. FlyerTalk's corporate code thread notes that Chinese tech company codes at US and European properties face a different verification challenge: staff may request proof but be unable to assess the validity of Chinese corporate ID cards. Marriott's rate desk has documented Alibaba as a monitored account given the company's rapid growth and high travel volume. High risk due to systematic verification challenges."

"My badge is definitely not from General Dynamics, but good to know. I'd rather stick with what I can proof anyway."

"I do this frequently. They rarely ask for the ID, and when they do, I just provide my company badge. Never had any drama. Also, my wife works for the US Gov't and when travelling for leisure they often have a better rate than my corp. In those cases we book the Gov't rate and they always ask for ID on check in. She provides her ID and we get checked in."