"PwC's corporate code is strongest in major financial hubs (NYC, London, Hong Kong) and carries a high verification risk. Users reported being asked for work ID, business card, or corporate email verification at check-in."

"I think you missed that OP doesn't have a badge and could very well run into an issue."

"As mentioned before some rates only company employees can use; others vendors/consultants can use. It's determined by what was negotiated w/ the company & Marriott. Rate rules will usually say it. BTW - some corp codes don't have id required in the rate rules. If you booked a legit corp rate & it didn't have that, I'd say you have a good case to the front desk to say it wasn't required. I would also print out the appropriate rate rules & staple them to the confirmation page. Of course if it does say id required, behooves you to have it."