"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 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."

"I now always make it a matter of course to carry documents (business cards of my contacts, e-mails requesting my visit etc.) from my host company when I travel. This has always proven sufficient for the few times I've been challenged by the front desk clerk."