"Bayer 251321 is confirmed as an IHG corporate code. IHG enforcement is highly brand-dependent: milepro.com states "At InterContinental or Kimpton, you'll almost certainly need to show proof of eligibility" while "Holiday Inn Express properties rarely check." Bayer's heavy presence at InterContinental properties in European pharma hubs (Frankfurt, Basel, London) means real-world usage skews toward high-enforcement properties. FlyerTalk on IHG code verification: "They do often ask for ID. YMMV." Rated Medium because enforcement is brand-split."

"Yesteryear it wasnt so risky sinc ethe CX policy was Day of @ Check-in time, so as long as you got there before the CX time was past, then if carded all you had to say was OK CX the res then. That doesnt exist any longer as its now 24 hrs before if not earlier, so no ID they simply will charge the CC you used when you made the res , forget about Disputing it as the hotel will produce the res and their CX policy and that you used a code that you werent entitled to use"

"Enforcement is highly fragmented across brand tiers. At Holiday Inn / Holiday Inn Express: minimal enforcement. At InterContinental and Kimpton: almost always verify. One user stated: "Airport Holiday Inns rarely check credentials, while InterContinentals in major cities almost always do." Properties near Seattle headquarters offer deeper discounts but face stricter verification."