"JP Morgan Chase's Marriott code JPM is a high-profile financial institution code. FlyerTalk's "Corporate ID required???" thread specifically mentions financial sector codes in NYC/Chicago as more likely to be audited: "The SF Marriott was specifically noted for cracking down on corporate code abuse." Chase has massive employee headcount (250,000+) making verification less targeted, but JPMorgan's Marriott discount at full-service NYC/Chicago properties can be substantial. hotelcorporatecodes.com: "⚠️ Sometimes." Business travel hubs (Manhattan, Chicago Loop) carry higher risk."

"I work for the front desk, at a Marriott, & have for the last 8 years .... So when it comes to room upgrades; it goes based on AVAILABILITY... sometimes no matter the tier, if we have it available - I will upgrade the guest. Now of course, higher tiered members get dibs on the upgrades first but after we go through the higher tiered members, Ambassador, Titanium, Platinum - then we go through the other ones. I cannot express this enough : BEING NICE & POLITE AT THE DESK GOES A LONG WA"

"I regularly stay at a renaissance once a month on our DTC rate and have done mobile check in but always end up at front desk. One time the front desk was like oh. We know you as you have been coming regularly, but I need to double check your id. I think it’s because someone shared it online and now it causes random checks for rest of us."