"Raytheon's Marriott code 9753 is a defense contractor code. Defense company codes at Marriott receive moderate scrutiny — defense employee IDs are typically security-badged and distinctive. Properties near Raytheon locations (Tucson AZ, McKinney TX, Waltham MA, El Segundo CA) regularly process defense contractor travelers. No specific Raytheon ID denial incident found in FlyerTalk, but FlyerTalk notes that defense contractor codes "tend to face more questions at full-service properties near major installations." US select-service: essentially no enforcement."

"I have been asked to show some proof couple of times. I normally show my corp id but credit card with employers name on it has worked, too. As would probably just showing my laptop with employer e-mail account or whatever. My impression has been they are happy with just about anything that proves I'm working for the company whose rate I use and why wouldn't they."

"I have a close friend who is a GM at a Marriott property in a fairly large US city (top 25 metro population). Their opinion is basically, "Hey, it's business. I'm not turning away a paying guest if they don't have the right ID." In this person's younger days as a front desk agent, they enjoyed catching people trying to use a corporate rate that the guest was not entitled to. As they became higher up and saw the books, occupancy rates, etc... Corp ID's became far less important than filling rooms."