"Texas Instruments' Marriott code TXI is a major semiconductor company code. TI HQ is in Dallas TX with major operations in Dallas, Houston, and globally. hotelcorporatecodes.com lists semiconductor/tech company codes at "⚠️ Sometimes" for Marriott. Properties near TI's Dallas-area campuses handle genuine TI employees regularly and may verify. No specific TXI denial documented in FlyerTalk. General Marriott enforcement: select-service essentially never checks; full-service urban 10-20%."

"We know what the various Deloitte, EY, PwC, Google, Meta, etc badges look like. If you work for the company, it’s not a problem to verify that you work there. We do this for the random people that say they work for Deloitte, when in reality, they just refill the vending machine at a Deloitte office."

"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."