"United Airlines' Marriott code UAL is an airline employee code. United employee IDs are company-issued physical badges. Properties near United hubs (Chicago O'Hare, Newark, Houston Bush, Denver, San Francisco) regularly handle United crew and employees. FlyerTalk's airline code thread: "Airline codes are more likely to be checked than random corporate codes because the front desk knows what an airline badge looks like." No UAL-specific denial documented. Airport corridor Marriott properties: moderate enforcement."

"I have stayed 100s of times with various corporate rates (including Japan) and the only hotel that has asked is W hotels. Even then they didn’t push much. I have been a consultant for 20 years and many clients require you to use their rates when they are paying the bill. The hotel doesn’t have an up to date list of every employee that works for a company globally. The woman at the W said “I don’t really care, just show me anything on your phone that says your name and that company. You can type an email now “."

"I wanted a higher room floor at a Seattle area hotel. I requested it at the front desk when checking in. The front desk thanked me for being a platinum member and told me that the hotel is fully booked and no “upgrades” to a higher floor for me. The girl behind me checked in and she was thanked for being gold, and they gave her a free upgrade to a suite and let her choose which room she wanted! I asked about the upgrade and they told me it’s random. I spoke to the manager and the manager said lots of rooms available and she gave me 5 rooms to choose from. 🤷🏻‍♂️ In the end, I got my upgrade. Had to fight for it."