How much should you expect to pay for your family cruise vacation? It's a simple question, but the answer depends on various decisions you make. Will you cruise for three days or three months? Do you want the most spacious, top-level cabin with a private balcony? Do you want to stay aboard and enjoy the ship's free amenities? Or will you add as many shore excursions as possible? Your answers to all of these questions — and more — will determine the price of your cruise.