Originally Posted by LondonIce

I'll chime in, just to give you an additional point of reference:

I have four DFW-HKG R/Ts (eight total segments) booked between September and December this year. I'll be flying once a month, roughly mid-month, always on a Thursday outbound and Tuesday return.

I booked the flights at the same time during a sale in late January, and called to apply all eight of my SWUs the next day. Five cleared instantly, one cleared three months ago, and two remain waitlisted.