@Trisha83 these are global community boards where hosts and guests from across the globe meet up to chat, trouble shoot and offer advice. I am in Australia for example.
The likelihood a host in your area with a suitable listing is going to read your post and make contact with you is very slim.
However, there is a filter you can use when you are searching ( top right hand corner -"more filters")- where you can select you want to search for listings that DO allow parties and events = "suitable for events" -
I've just down a very quick search and got 42 large houses in Massachusetts. that allow events - the first few were near the beach.