Originally Posted by
FrenchBullies1975
You're exactly right. As a 1K on a now-Y fare, if a seat opens up, I should be able to confirm immediately, and 1K desk assured me that would happen. However, they won't issue a refund if the F space doesn't open up.
Note that you should actually have a fare in whatever booking code your DEN-EWR booked into. A 1K upgrade from Y needs PN space, but you actually only need whatever that booking code is (probably P or Z?). This will take an agent and a bit of arguing though.