This guide is perfect for those that are looking for a deep discount on hotel bookings and are paying with cash (or credit) as opposed to those that are looking to book on points.
One hack that you can use is to say that you're using the code because you're a consultant for the company and they passed it along to you since you'll be billing them back.
According to the rules, you need to provide either a business card, work badge, work-email printout that you're affiliated with the company and the associated code you're using.
What do I need to prove affiliation with the company?