Most of the Beach camping on the east coast is highly regulated... at least the one's we have been to and I wouldn't want to test the rules. Not sure what your situation is but we have made it 4 or five days with conserving and had no issues. Never needed to bring a tote. Sometimes when we have a big mess to clean up we will take advantage of the convience station. Some offer honey wagon service's or will have a local contractor that will do rounds through the campground. We have taken advantage of this a few times. If in doubt call the campground beforehand.
Mike