CNN spoke with Anthony Daniels, the actor of C-3PO, about narrating Star Wars: In Concert. Anthony Daniels said about costumed fans showing up to the concert:
“I was with a bunch of stormtroopers in Germany and I thought well, these are clearly people who don’t have a life … so I asked one of them, you know, ‘What do you do for a living?’ And he said, ‘I’m a surgeon,’ and the next one was a lawyer, and the next one was an oceanographer. And after that, I stopped asking. I’m just an actor — I felt very humbled by that,” he said.
You can read the rest of the article here, including how the Star Wars story was modified and what Star Wars: In Concert has proven to Anthony Daniels.