It's great that you get to meet Yuri Lowenthal and Tara Platt 
I remember my time when I met them in 2012, they are both incredibly sweet and charming and I also remember that even if I wanted to have Yuri's autograph, I hated the idea to spend money on anything that was Sasuke related
. I still laugh and tease my friend who didn't know at that time how much I hated Sasuke, had bought me the Sasuke figurine as a birthday present and gave it to me to get the autograph and that between both Naruto and Sasuke figurine, he chose Sasuke...apparently I had one of the scariest stare that he ever saw on anyone when he told me that
( he bought me the Naruto figurine after that even if I told him he didn't have too but he said he wanted to give it to me as a ''I'm so sorry, please don't kill me'' present for shamelessly giving me the figurine of the character that I hated the most instead of one of the character that I loved the most and that he promised me that he will never forget this precious information ever again
)
So anyway, hope you'll be able to meet them and if you can ask your question then it's a bonus 