"BMW's Marriott corporate code does not have specific community-documented denial cases. FlyerTalk's general corporate code thread warns: "Every hotel has the right to ask for identification that associates with the corporate code — but very few actually do." BMW is a premium brand with a recognizable code, moderately identifiable to hotel staff. European properties — especially in Germany — carry a higher verification risk."

"I work front desk and it seems like management is really pushing to check IDs for any special rate. Personally im lazy and also don’t care that much to start a confrontation so I only verify govt rates and employee rates, but yes it is being enforced more harshly. Corporate rates I guess are easy to find online and thus abused. Again, I don’t care that much because they’re still pricey anyway !!"

"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."