well, 2 days into the event, got all the premium tickets I could on MY own account and got nothing.
found 2 SSR Eidos (Huanglong and Fenrir) in one of my union members account with his tickets.
Then today, logged into another union members account and found one of the SSR kami he doesn't have, and SR kami Hephaestus
nice luck I have for others in my union, huh?