"Deutsche Bahn's Marriott code 11353 is a German railway operator code in the global GDS system. Outside Germany, this code is essentially unknown to hotel front desk staff. German Marriott properties near Deutsche Bahn offices may be more familiar, but the code is rarely discussed in English-language travel forums. No verification incidents found. European public transit company codes attract minimal scrutiny."

"lol, my front desk managers *hated* any time I asked them to cover AYS. They’d go out to the desk and help no problem, but I always got some kind of attitude asking them to hop on the phone for my break. I worked at a ~650 room property and was regularly scheduled by myself for AYS second shift."

"I have never been asked (yet) at Marriott but usually I show up at the desk by handing over ID/credit card. Don't read this as me endorsing going crazy using the codes that you aren't supposed to use! Interesting about the client reports going back daily."