"FedEx Custom Critical (954288433) is an IHG code for FedEx's expedited shipping division. FedEx's general IHG code enforcement: IHG has escalated monitoring of FedEx codes in recent years, with InterContinental properties requesting employee ID. FedEx monitors hotel usage volume across business units — inflated usage in any unit could flag a code for review. Holiday Inn/Express tier: minimal enforcement. Crowne Plaza and InterContinental: moderate enforcement. One FlyerTalk user documented being charged rack rate at a Crowne Plaza after failing to show FedEx credentials."

"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."

"A former Siemens employee posting on FlyerTalk noted: "When checking in as a group of Siemens employees, we were never asked for ID. However, when traveling alone, front desk staff often asked for some form of ID." IHG enforcement is highly fragmented across its franchise network. Siemens's code falls into the mid-tier corporate bucket. At InterContinental/Kimpton properties, verification is near-certain; at Holiday Inn Express, essentially never. IHG's 2018 T&C update explicitly added unauthorized corporate rate use as grounds for account closure."