Wedding Questions

My dream is to get married at a private house/estate that has an oceanfront view or at least a waterfront view. The ideal scenario is to do this on the seacoast of NH, Maine or Mass. I want an outdoor wedding - so I'm mainly looking for a property that has a great lawn in which we can pitch a tent. I'm hoping people can give me ideas/recommendations as I'm having a hard time finding private residences that are allowed to having weddings. Thanks in advance!