Buffet. In the buffet, you will find free water at any time that the buffet is open. On some cruise lines, the buffet is open 24 hours a day whereas on some other lines you'll only find the buffet open for meals. In addition to free water, you'll usually find free tea, coffee, and on occasion fruit juices.
You will have to pay extra for shopping purchases, photos, spa and salon services, and Internet access. Some ships offer premium dining venues, which come with a surcharge or have a la carte prices. Also, airfare and airport transfers are not included in your cruise fare, but can be added when you book your sailing.