So, this happened:
Me: "I loved the show, I came all the way from Montana to see it. You're amazing!"
"Oh, thank you so much! Thank you for traveling so far."
Me: "My pleasure, it was totally worth it."
He looked at me and said "You have a pretty smile", smiled at me, and then continued signing.
OH MY GOD. DANIEL RADCLIFFE JUST TOLD ME I HAVE A PRETTY SMILE I'M DYING OH MY GOD. I managed not to scream.
Dream come true!