"ATK (Alliant Techsystems, now Northrop Grumman Innovation Systems) is a defense contractor. The Marriott code 259552 for ATK follows the defense contractor enforcement pattern: properties near major defense installations (Virginia, Utah, Minnesota) are more likely to verify. FlyerTalk's defense codes thread notes: "Defense contractor codes tend to face more questions at full-service properties near major installations." No specific ATK denial incident documented, but the defense sector calibration applies."

"I wouldn’t mind that at all. Credit Card companies have super weak security and it’s very easy to defraud them - they just pay our money back, and counts that as losses so we’ll sure up about it and keep using the cards What I mind is that the mobile check-in is basically a lie. Marriott is deceiving me. Random hypothetical people that might or might not stole my credit card are not. Hilton works just fine btw"

"I work as a consultant and frequently ask for and use my client's rates (at their insistence, since I will be billing them back). I have been asked for ID maybe one time in 15 since February, when it was announced in this forum that rates would be ID'ed."