If there is a trunk show and a program, you probably won't be doing any sewing. Some ladies bring handwork to do while they sit. You might want to bring a notepad, and/or a camera. Always ask - before photographing someone's quilt, it's only common courtesy. If they have a library, check it out! It's a great place to find patterns and information for nothing!
Once you start to feel comfortable, volunteer to be on a committee. Any committee. It allows you to become close to the other people in that committee and then you have a core group of "I know you's" set up.
Spread your wings and fly!