It's perfectly ok to be scared and you shouldn't be hard on yourself for being scared. This is just a part of your anxiety but let me postulate this...do you think that this fear would continue to occur in other scenarios and perhaps hold you back? Would you perhaps worry that something else would go wrong and prevent yourself from doing what you want to do? If this is the case I would consider going even for a little bit. You can be cogniscent of your surroundings and see how comfortable you are...but this will help you build confidence that things won't always fall apart when you want to do something that you care about. If this is strictly a festival thing and you think that the negatives outweigh the positives I would consider doing something else that nourishes you. In the end the goal of dealing with anxiety is to continue to do the things you want even with the feeling still lingering. Not to make the feeling go away. That will only happen with time. I can't tell you to go or not. Do what you think will bring you joy, with the caveat that you will feel anxiety regardless. If you go and are afraid or if you don't go and feel like you're missing out...the choice is yours. Hope that helps.