"Boeing's Radisson code (20494) is a secondary Boeing code alongside the Marriott code (BWG rated Medium). Radisson's franchise network applies far less consistent enforcement than Marriott. Boeing's major travel markets (Seattle, Chicago, Charleston SC, St. Louis) are primarily Marriott/Hilton-dominated, making the Radisson code a lower-frequency option. Radisson's Americas properties (now Choice Hotels) have minimal verification infrastructure."

"There is the delightful CARLSONF family & friends promotional code, which means the equivalent of EUR 80 at any hotel with availability. You need to mention the name and work location of a Carlson group employee."

"I leverage my work corporate rates for my leisure travel. I've never been asked for employee ID as a result — they just verify the rate code at booking."