"GE's IHG code is directly mentioned in FlyerTalk: "The GE code brings a Holiday Inn rate down from $114 to $84." A more recent thread warns: "In the past two years, IHG has been very careful in checking on people using IBM and GE corporate rates. Not only corporate ID is required, also an email from IBM or GE to confirm staff identity in extreme cases." GE's documented 70% discount at InterContinental Chicago makes it a high-audit-trigger code at luxury IHG properties. Holiday Inn Express tier: low risk. InterContinental/Kimpton tier: high risk, consistent with the brand-tier pattern across all IHG properties."

"The Walmart IHG code is widely discussed online. Analysis confirms: "IHG might occasionally ask for verification, such as a Walmart employee ID, upon check-in. IHG may cross-reference submitted information with Walmart's employee database." Enforcement is tier-based: airport Holiday Inn Express properties rarely check while InterContinentals almost always do. With 1.6M+ US Walmart employees, hotel staff are familiar with what Walmart IDs look like, making false affiliation claims harder to sustain."

"You are unlikely at Hilton/Ihg to be called for proof of the standard corporate "gold" rate with the standard 15% discount off flex. You may well get asked when gaining larger discounts or free breakfasts etc over and above 15%"