"Duty Free Shoppers' Hyatt code (12114) is a travel retail code, not a traditional corporate employee benefit. LVMH-owned DFS operates airport duty-free stores globally. No FlyerTalk or Reddit thread discusses DFS Hyatt verification incidents. Travel retail corporate rates at Hyatt are a low-enforcement category — DFS employees are airport-based, and Hyatt properties near airports (Hyatt Place, Hyatt Regency airport hotels) have minimal verification protocols."

"I’ve never been asked at Hyatt but have at Marriott - specifically in Tel Aviv (which I was staying at as there were no Hyatts when I was there). You can also be working FOR a client whose company code you are using so it makes the idea of a company code and the verification rather meaningless."

"AAA (alt) Hyatt codes (17500 and 15985) are secondary AAA membership discount codes. AAA rates are publicly advertised membership discounts — not confidential employee benefits. FlyerTalk's dedicated 'AAA card – Do hotels check?' thread documents: 'One frequent traveler staying 1-3 hotels per week was asked for the AAA card at about 10-15% of hotels.' AAA membership cards are easy to carry and present. These alt codes share the same low-risk profile as the primary AAA Hyatt codes."