"UPS' Marriott code UPS is a three-letter ticker code for the package delivery giant. hotelcorporatecodes.com lists UPS as "⚠️ Sometimes." UPS HQ is in Atlanta GA — Marriott properties near Airport and Midtown Atlanta encounter UPS employees regularly. US domestic Marriott: select-service essentially never checks; full-service occasionally. No UPS-specific verification denial documented in FlyerTalk. The recognizable three-letter ticker code circulates in public compilations, increasing community awareness."

"I have been asked to show some proof couple of times. I normally show my corp id but credit card with employers name on it has worked, too. As would probably just showing my laptop with employer e-mail account or whatever. My impression has been they are happy with just about anything that proves I'm working for the company whose rate I use and why wouldn't they."

"I swear the front desk employees are trained to resist and encouraged to lie. They try to save the rooms for members with higher status or complainers. I've booked King rooms and they'll assign me a double or a queen. The first rep will tell me they're fully booked and there's nothing they can do. But once transferred to a manager, King rooms magically appear!"