"UCLA's Marriott code 364183 is an academic institutional code. University codes at Marriott are the lowest-enforcement category — hotel staff do not typically verify university affiliation for academic rates. UCLA's Los Angeles presence means nearby Marriott properties (Westwood, Santa Monica, Brentwood) are familiar with the code, but no enforcement incidents are documented. Select-service properties: essentially never verify. Full-service: very low."

"GAP Inc's Marriott code GAP is listed in corporate code databases. No verification incidents documented in FlyerTalk or Reddit discussions. Clothing retail corporate codes at Marriott receive minimal attention from front desk staff — retail employee IDs are not standardized enough to be reliably verified. US domestic properties rarely verify retail-sector codes."

"I have never been asked (yet) at Marriott but usually I show up at the desk by handing over ID/credit card. Don't read this as me endorsing going crazy using the codes that you aren't supposed to use! Interesting about the client reports going back daily."