"Kroger's Marriott code KRO is a major grocery retail corporate code. No FlyerTalk thread discusses KRO verification incidents. Kroger has 500,000+ US employees making ID verification impractical. Grocery retail corporate travel primarily occurs at select-service properties (Courtyard, Fairfield) near distribution centers and regional offices — property types that essentially never verify corporate codes. hotelcorporatecodes.com lists retail codes as "low enforcement" overall."

"I used to China often for work and book directly. I’ve never been asked, if you have a sticker or they can see something with the company logo they assume you work there. I’ve only been asked in Korea and was a hot mess until a manager stepped in."

"Bank One's Marriott code BOB may still exist in Marriott's GDS system following the 2004 acquisition by JPMorgan Chase. JPMorgan has a separate Marriott code (JPM). Legacy acquired-company codes are practically never verified as the hotel has no way to confirm employer identity for a company that no longer exists independently. Risk for legacy codes is negligible."