Onstage is: smiling and knowing your cues and not screwing up and most importantly, making everything look so easy, they won't realize how hard it is.
Backstage is where the real show is. I wish I could show you. I wish I had pictures. Backstage is 150 lighting cues, over 50 video cues, over 50 fly cues, and who knows how many sound cues. Backstage is a complex dance between actors and crew. Entrances, exits. Quick changes, scene changes, crossing from stage left to stage right and back again. Watching from the wings. Staying out of the way. Knowing just when to lurk just offstage and when to go downstairs and read a book for a while.
Next time I whine about 'fitting in' on a new job, just shoot me, okay? It's a couple of days since then, we just had our first audience tonight and I can't imagine how hard it's going to be saying goodbye to these guys in a month's time.