Do you have all the characters? If so, you shouldn't. At least not when I've followed Plowking's formula.
Ok. So last night my method let me down. The school was empty, yet I had two performers with nothing to do. So I tweaked my method: Rock Stage: Peter, Freddy, Shredder, Nick Pop Stage: Bart, Milhouse, Ralph, Nelson AUTO FILL THE SCHOOL FIRST Then Auto Fill all the other slots. I've done this for a third time just now, and haven't had an empty venue yet.
I typically go in order and it's still ok. But I just got the LT Smash and A political message/dialogue. We know where LT Smash is on that spectrum. Oh, and that bling cup is bigger than I thought it'd be...
I have every performer except Leon. I don't have the final act prize character and I don't have Weird Al's Pop ability yet. So when 4 of the 6 venues are Pop, I end up with one venue that has no available performers (I only have enough for 3), and 3 Rock performers with nowhere to perform.