That will work fine.
EDIT:
I came back to flesh this out:
A FP is not needed for FoLK.
But, a FP -and- early-arrival time can pay off much better for the Nemo Musical.
We always get a Nemo FP and arrive an hour before Nemo show-time.
FP guests are let into the theater as soon as the previous audience clears the seats. FP guests can choose ANY open seats in the theater.
Then, much closer to show-time, they finally let in the standby line.
Depending on crowd level, some or all of them will fill the remaining seats.
If guests arrive too close to show-time, they MIGHT get shut out.
If it's a busy day, I'd do the FP thing and arrive early.
At WDW, "early" beats "later" every time.