"Alaska Airlines' A70 code is listed on corporatecode.org and confirmed across major aggregators. Airline employee codes as a category carry Medium risk — hotels are accustomed to airline crew and employee rates and occasionally verify crew IDs, especially at airport-adjacent properties. The A70 code is alphanumeric rather than a pure 3-letter ticker, making it slightly less prominent in code-sharing communities. No specific forum discussion found documenting elevated enforcement. Standard airline-sector Medium applies, with higher risk at SEA-TAC corridor properties."

"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."

"I regularly stay at a renaissance once a month on our DTC rate and have done mobile check in but always end up at front desk. One time the front desk was like oh. We know you as you have been coming regularly, but I need to double check your id. I think it’s because someone shared it online and now it causes random checks for rest of us."