"JC Penney's Marriott code JCP is a retail corporate code. No FlyerTalk or Reddit thread discusses JCP verification incidents. Retail corporate codes at Marriott are among the lowest-scrutiny categories — JC Penney employees travel primarily for store visits to suburban/mall-adjacent markets where Marriott select-service properties dominate. These property types essentially never verify corporate codes. JC Penney's financial difficulties (multiple bankruptcies) mean active corporate travel has declined."

"In North America I've been asked a single time in the 15 years I've been using Corp rates (for a few years I'd use them on multiple stays per week). My trick is to approach the counter in a friendly way, ask how they are doing, maybe ask an easy question about the hotel (where's the gym?) and connect with them (boy it's hot out there today!) They are happy to have met you, it is a pleasant experience, and you go on your merry way. I'm also Titanium for life and currently have Ambassador, but I've done this when Gold and Platinum. For that one time they asked I said I had actually just started and didn't have my business cards yet, but should have them for my next stay and they let it go. I was never asked by that hotel again (Courtyard Bellevue on an Accenture rate.) Doing a mobile check-in will also shorten the time spent. Just have your ID and card ready to speed things along."

"I work for a company that is partially owned by a Fortune 100 company and we have their corporate rate code linked to our travel website, (although it is one of the ones that is very easy to figure out). In 4+ years I've never been asked for any ID, although a few times a year I get the question of "what company are you with?""