"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."

"My employer does not have a corporate rate but when I'm consulting for a company that does, I use theirs. I've only been challenged for identification once. In that one situation I explained the consulting arrangement, and the desk clerk accepted it without a badge or business card (neither of which I had anyway)."

"I now always make it a matter of course to carry documents (business cards of my contacts, e-mails requesting my visit etc.) from my host company when I travel. This has always proven sufficient for the few times I've been challenged by the front desk clerk."