"hotelcorporatecodes.com lists MCD (McDonald's) explicitly with verification status "✅ Rarely" — the lowest verification designation. Regional scope is North America. McDonald's corporate travel tends to concentrate in suburban/airport corridors near Oak Brook IL HQ and regional offices — property types (Courtyard, Residence Inn, Marriott) in these corridors have the lowest enforcement rates on FlyerTalk. No specific FlyerTalk thread found discussing MCD code challenges. The "Rarely" rating aligns with the general pattern that non-financial, non-consulting consumer-brand codes at non-luxury US properties face minimal scrutiny."

"HotelCorporateCodes.com rates the Marriott DIS code as "Sometimes" for ID verification. No dedicated forum thread found specifically discussing Disney corporate code verification incidents. Disney has 140,000+ US employees and the code is widely circulated. One FlyerTalk user noted that a retired employee who disclosed their retired status was never asked for ID, suggesting properties prioritize rate code volume over strict verification. FL Marriott properties near Orlando HQ are most familiar with the code."

"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."