"Raytheon's Marriott code 9753 is a defense contractor code. Defense company codes at Marriott receive moderate scrutiny — defense employee IDs are typically security-badged and distinctive. Properties near Raytheon locations (Tucson AZ, McKinney TX, Waltham MA, El Segundo CA) regularly process defense contractor travelers. No specific Raytheon ID denial incident found in FlyerTalk, but FlyerTalk notes that defense contractor codes "tend to face more questions at full-service properties near major installations." US select-service: essentially no enforcement."

"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 occasionally try to get the corporate rate for a company I'm visiting in the area (for sales/consulting). Only once has a front desk clerk asked me to prove my eligibility, and she was satisfied by me giving the name and telephone number of the person I was visiting."