"EDS (Electronic Data Systems) is one of the most widely circulated Marriott corporate codes — multiple travel sites specifically call it out: "Some of the best codes are EDS, GEE, DTC, JOH, and APC — with EDS frequently cited as one of the more widely available and effective codes." High forum visibility means hotel revenue managers in tech-heavy markets are more aware of it. EDS (now part of HP/DXC Technology) no longer issues employee ID cards with the EDS branding, which could complicate verification. hotelcorporatecodes.com rates it "Sometimes.""

"Electronic Data Systems (EDS) was acquired by HP in 2008 and later became part of HP Enterprise Services and then DXC Technology. EDS Marriott code EDS likely still exists in GDS systems but verification of "EDS employee" is ambiguous — the company no longer exists independently. One FlyerTalk user: "EDS codes are still surprisingly active at some Marriott properties." hotelcorporatecodes.com lists EDS as Medium risk. Former EDS employees may have kept using the code post-acquisition."

"I am very rarely asked to prove my eligibility for a rate...but they have every right to ask and if you can't produce it, you will be re-rated to the current rate, which is often even higher and there is no guarantee points rooms will be available. Doing online check in rarely helps this as most properties don't actually do online anyway - especially to people who are not returning guests to the property or elite. You are taking a gamble. One that is likely to be fine. But understand you are intentionally breaking the terms of the bonvoy program and if someone really cared, there can be consequences."