"From Fishbowl (professional network used heavily by Big 4 staff): "How do I use the Acc or E&Y codes at Marriott and get around the ID check piece?" — confirming that ID checks are a well-known friction point for consulting firm codes. The thread attracted replies suggesting telling the front desk "you're a contractor doing work for them." hotelcorporatecodes.com lists EYC with 10-18% discount and verification status "⚠️ Sometimes." FlyerTalk's Marriott enforcement thread confirms consulting firms get checked more often at full-service hotels, but select-service properties rarely verify. US domestic: ~10-20% of stays checked; Europe/Asia: significantly higher."

"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."

"I get asked every single time on Government Rates/Per Diem Rates. (Multiple properties per month) I just know to keep my ID right there. Every once in a while they will try to photo copy it and then have to explain that isn’t allowed, otherwise I have no issues with it being validated."