@fBoyle-- My hometown in California has an annual zucchini festival too. It's mostly a charity event for non-profits but it is very entertaining since there are usually bands playing. My favorite food is the deep fried zucchini. I'm not a fan of zucchini normally, but it's pretty good when it's fried.
There is also a zucchini growing contest and the person with the largest and heaviest zucchini wins. My dad won one year. He was so proud.