i see little point, in 9 tail there is actually something TO prepare, namely the buffing, this doesn't have that
Also, in 9 tail, time is of the essence, as that directly affect your damage, ranking and reward.
here, time is a non-issue, you can only hit 3 times, so if your group can't kill it with 3 hits each, it's moot.

And if your group can kill it, it SHOULD be a collab effort to get the most reward possible for the group, that is to say to NOT kill it for 20 minutes and THEN kill it. So if you are 5 min late, no big deal.

So what's the point of prep time?