Going on a cruise can be a good time even if you never get off the boat but to get the most out of your trip you'll definitely want to schedule some interesting shore excursions. Just make sure that you buy your from a reputable company so that you don't get ripped off. Otherwise, instead of sledding with the huskies across the frozen tundra, you could be cuddling with a pack of mongrels from the pound with blue contacts in their eyes.