Sam Great advice! Especially the pedal and pianissimo and practicing just before the performance.
I've had enough trouble with pedal action that I have a calendar reminder to check it every month for my piano club meeting. They meet at piano stores and the pianos can be on different height casters, have sticky pedals, etc.
I hadn't thought to try out pianissimo, but I can remember several times when I had trouble getting a quieter sound out of one their acoustics that I could easily get from my digital.
I also remember trying out my whole piece on the piano once before a meeting and made so many mistakes that I decided not to play at the meeting. Later in the meeting I felt better and played well, but I'd rather not have that happen again.