I'm really glad I had that extra hour of time to work on Tuesday night, because it turns out I really needed it! That said, I did manage to get the underskirt hem all pressed and pinned in place last night, so it's 100% ready for handsewing. The overskirt hem is kind of pressed and pinned. Like, I pressed the actual hem fold, but I need to turn in the raw edges and press and pin those, and then it will be ready to go. But since I doubt that I can even finish stitching the one hem at rehearsal tonight, and since the remaining pressing on the overskirt should take less than 15 mins, I'm sure I'll have that ready to stitch for Saturday's rehearsal.
And hopefully tomorrow after my gig, I can fix the bodice darts and fit/cut out/make-up/attach the sleeves, since then I'll pretty much just have hand-finishing left on the bodice.