Originally Posted by
lucycan
So why would both the Diamond desk and DL assist tell me I am on airport standby and that it will "surely clear"?
Probably because under the heading "DAY OF DEPARTURE" it says this:
DAY OF DEPARTURE
If a Medallion member and companion (if applicable) do not clear the waitlist prior to departure, they will be automatically added to the airport standby list at time of check-in and will be cleared at the gate if space is available.
You hafto go deeper into the rules to find the other wording with the AMS exception.