In case you don't know: Rae Carson wrote The Girl of Fire and Thorns series (which is completed as of Tuesday).
And C.J. Redwine wrote Defiance trilogy (of which only the first two books are out so far).
These are two brilliant series and really represent the best of YA fantasy/post-apocalyptic books. I knew from their social media sites that Rae and C.J. were smart, funny, and nice. But after meeting them I can most definitely confirm all of these things. They were really encouraging when I explained that I am an aspiring writer and they gave some excellent tips (such as finding your own voice and writing about your passions.)
Before the signing there was a question and answer segment and the discussion was all very pleasant and very important.
Basically this signing has made me even more excited for when I go to Yallfest in November. I'm convinced that book people are some of the best people.