Aw, yay! I'm glad there'll be more K-ON! cosplayers there. And by the look of your icon, your Mio is really good!
My friend is going as the ending song Mio as well, and I'm doing Yui in uniform. And an acoustic Giita becuase I don't have an electric one
*LOL I have to re-learn how to play some songs*
I thought of faking it with just an electric guitar case, but I couldn't find one for less then 50$