"hotelcorporatecodes.com specifically categorises the Bayer/MLM code as "Rarely" for ID checks — the only entry rated below "Sometimes" in the pharma-sector Marriott codes. The MLM ticker does not correspond to an obvious company name, limiting its public notoriety. Pharma codes as a category are generally Medium, but Bayer's specific code consistently surfaces in the "low scrutiny" tier on aggregator sites, consistent with a large but relatively travel-light pharma footprint compared to consulting or finance."

"Same- we stay at a very large Jw often just for a quick get away and have gotten to know a few of the staff. We’ve checked in numerous times and have been told there aren’t any upgrades - I’m Platinum. No worries, we’re just happy to be on vacation for a few days. Shortly after we’ve seen a specific front desk agent that is always friendly with us and she has upgraded us (yes, after we’ve checked in) at least three times…. And mentioned as she’s doing it, “idk why they didn’t upgrade you…. “ we never asked her since we were already checked in and we’re fine with the regular room. But certainly, a suite is a nice upgrade and very much enjoyed."

"I've been given codes for several chains from family/friends who are entitled to have them. All have assured me they have never been asked to provide company ID when checking in. In fact I was told they give the codes out to visiting clients who won't have ID anyway."