1.    When you hand over your passport at the start of the cruise, make sure you get a receipt. Keep it!
2.    Some ships do not allow alcohol until the last day. If you take alcohol that you’ve purchased outside, the ship may confiscate it and give it back on the last day.
3.    Read up in advanced on your stops so you know about the place, and you have an idea of what you might want to do there.
4.    When packing, don’t forget gym clothes and shoes. Many ships have gyms and offer exercise classes.
5.    Check the weather on the ports you’ll be visiting and pack accordingly.