"JOH is listed on FlyerTalk's "List of publicly usable Marriott reservation codes" as one of the widely-circulated three-letter ticker codes. A self-identified J&J employee was cautioned: "the code is not meant to be shared publicly — the proper way to get it is to email someone from your company." hotelcorporatecodes.com lists JOH at 10-15% discount with "⚠️ Sometimes" verification. FlyerTalk general pattern: pharma/healthcare corporate codes at full-service Marriott yield ~30% chance of check at urban US properties, near-certain in Europe/Asia, essentially zero at select-service. The code's ticker-symbol obviousness means it circulates widely, which has historically triggered audit flags at some properties."

"I am very rarely asked to prove my eligibility for a rate...but they have every right to ask and if you can't produce it, you will be re-rated to the current rate, which is often even higher and there is no guarantee points rooms will be available. Doing online check in rarely helps this as most properties don't actually do online anyway - especially to people who are not returning guests to the property or elite. You are taking a gamble. One that is likely to be fine. But understand you are intentionally breaking the terms of the bonvoy program and if someone really cared, there can be consequences."

"I work as a consultant and frequently ask for and use my client's rates (at their insistence, since I will be billing them back). I have been asked for ID maybe one time in 15 since February, when it was announced in this forum that rates would be ID'ed."