"RBC Royal Bank's Marriott code 57845 is a major Canadian bank code. RBC is headquartered in Toronto with major US operations. Finance-sector Marriott codes carry medium enforcement risk, especially in Canadian markets and NYC. hotelcorporatecodes.com: "⚠️ Sometimes" for bank codes. Canadian Marriott properties in Toronto are most likely to verify RBC codes — front desk staff are familiar with RBC employee badges at downtown Toronto properties."

"I don't do mobile check-in if I'm wanting to upgrade. I check the app before I go in to see if any suites are available to book during the duration of my stay. If there is I just say "Would it be possible to get upgraded to an available suite with my platinum benefit?". Of course this is typically at the hotel that I stay in about once a month for 3 day at a time for work. The front desk pretty much knows me and know that I am fairly low maintenance."

"I have a close friend who is a GM at a Marriott property in a fairly large US city (top 25 metro population). Their opinion is basically, "Hey, it's business. I'm not turning away a paying guest if they don't have the right ID." In this person's younger days as a front desk agent, they enjoyed catching people trying to use a corporate rate that the guest was not entitled to. As they became higher up and saw the books, occupancy rates, etc... Corp ID's became far less important than filling rooms."