My sister had her wedding at a national park in WI right off of Devil's Lake. It was gorgeous, but because it was a public park there were lots of people present. They didn't even try to be quiet either. Kids and adults both were running around screaming and hollering, and there were probably 20-30 people sunbathing on the beach within 10 feet of us. My little brother couldn't take his eyes off 2 particular girls in bikinis. It was very distracting! Not sure if there would have been options to pay to have an entire area closed off for the wedding or not. Heads up though, to anyone thinking of going this route!