We will coming to Cape Cod from Ottawa, Canada on Sunday July 3 to a rental unit. We won' t be able to arrive at Cape Cod until later evening and I am wondering about grocery shopping for Monday morning. We are staying in Eastham. Are there large grocery stores nearby or should we build a stop in on the way down? Are prices that much higher than off the cape? (probably not for us, since Canadian grocery stores are usually more expensive than in other American cities we've shopped in). Many thanks.