For my personal experiences and from what i heard from other guys (which I know personally, not users in the forum), interpersonal has been the biggest waste of time in my life.
I’ve been there for 5 times, (separately, so 10 nights, 10 planes, etc.), sometimes very expensive, for literally nothing !
I reached the CQ for EW, and it was my dream, as I was so happy to have reached the final stage, ok, probably my interview wasn’t great, but I realized from the first second that they were not interested in us (us and not just me).
Finally I went there for WDL, again passing the BQ, the sim assessment (in August), and now I’m still waiting to be called for the CQ, and I’m not even sure if it’s gonna happen...
Interpersonal is absolutely useless.