It is absolutely not sorted. I think it's pretty safe to say that 11 of the corps are marching finals night, but the twelfth spot is wide open, and each one of those corps knows that.
Because they know that, they are all pushing for it. This kind of competitive energy is great for this activity. I actually love BK's and BAC's show, but I am still hoping that the competitiveness will make the current 12-17 place corps get even closer to those!
I do believe that the 12th spot will not be the same in all the regionals.