"No specific FlyerTalk or Reddit threads document AIG code verification incidents. The code follows Marriott's general corporate rate policy. AIG is a large but relatively low-profile financial services firm; its ticker-style code is widely circulated but US properties rarely enforce. International properties (especially Asia and Europe) are more likely to ask. No documented denied-rate cases found specifically for AIG."

"I have never been asked and I have 51 nights in a Marriott this year using our corp rate."

"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."