When travelling last year from CT to Winfield< I tried to insure my guitar but could not find anyone to insure it. Later found out that Annie Wenz insures both of her guitars through BMI. I had my best luck carrying it on and putting it in an overhead.Christine Lavin suggests packing it in a hardshell case and using a softshell case for your clothes instead of a suitcase. When you get to the Festival it's a lot easier to carry. I haved used this advice many times.
See you in Winfield!!! Anne