The Minnesota State Fair is something like a vegetarian paradise. I do not say it is a vegan paradise (though there are options around), I do not say it is a healthy eater's paradise (though if you made the effort, you could eat healthy), and I certainly don't say it is an animal rights advocate's paradise (in fact the exploitation of animals is displayed and celebrated).
But one of the laments of vegetarians when out and about is limited options. You can find yourself in situations where your options are very limited (I've been in restaurants for social reasons where my choices were pretty much between two appetizers). The outlandish variety of food available at the State Fair includes an outlandish variety of vegetarian-friendly food.
My recommendation for fair eating is to find somebody you can share food with. This allows you a much greater variety of foods to eat without completely gorging yourself and without completely ungorging your wallet.