Originally Posted by
jackal
Correct.
Although I'm not sure if even a full Y ticket on DL confirms directly into F if no upgradeable space is available. I'm less familiar with DL than with UA, but on UA, even as a 1K, if you buy full Y, there must still be R space (upgradeable space and the equivalent of U on AS) for an upgrade to be confirmed. I assume it works similarly on DL.
I think that used to be the case on NW, but pretty sure it's not true on DL.
I'm old.