Or can it just fill up?
I was staring at a 2h 40m join button about 12 hours ago. Seemed to allow joining.
I thought it did, but the Bullseye event greyed out on me after an alt-tab. I joined the Groot event instead, got kicked back to PVP event selection after one fight, and Bullseye was open again.
That was weird.
I joined the two last events before BE with 2 hours on the clock.
I typically play PVPs starting at the 75-90 minute mark, but have played for as little as 20 minutes - you can start at any time you like.
Ended up getting in and finishing 12th, but it’s being wayyyyyy slow to deliver my rewards. Where’s my HP damnit.