Originally Posted by
DFW DL
Consider yourself fortunate that you've been able to use them, especially to HK. Since I won't risk a waitlist on a Y->J upgrade, I have a bunch that I haven't been able to use.
if your expectations are to clear every SWU at booking, then you probably won't have a good experience.
Used all four of my 2017 SWUs on Y-->J longhauls between between March and April of this year. Two cleared at booking, two off the waitlist.
Still haven't missed an SWU request as an EXP.