Need an outdoor location for a ceremony by october 30th this year???

So my fiance and I were planning on getting married next October with the big ceremony and reception afterward and we've decided that it's just too much. So now we would like to get married on October 30th this year and all we want is a nice outdoor location on long island that is inexpensive since we're going to do just a ceremony and be in and out. There are only going to be about 30 people attending - all immediate family and afterward we are just going to reserve a room at a nice restaurant for dinner. Has anyone else done this and if so where are some good locations and ideas? Any help would be very helpful.