The best way to save space in your luggage is to first make a list of the items that you want to take and stick to that list. A lightweight, durable luggage system will make boarding a breeze. A luggage compression system like the Pack-It System will prevent wrinkles and maximize space in your luggage. Try Travel Space Bags for knits and other wrinkle-resistant garments.
Make the Most Out of Your Cabin Space
Counter space throughout the cabin is at a premium on most ships and the space that you do have available can be risky to use due to the movement of the ship. Most cabins come with an ample supply of hooks that you should plan on utilizing to the fullest to maximize space and secure your belongings. Use a hanging toiletry kit to help save space in your cabin.
All the Necessary Precautions
Cruise ships are not exempt from the effects of choppy waters, so it's a good idea to bring along something to ward off motion sickness. It gets very dark at night on the sea and you don't want to disturb your shipmates, so bring a small flashlight for maneuvering around your cabin in the middle of the night.
Protect Your Treasures
Most cruise lines offer a mock "charge card" that each guest is issued at the beginning of the cruise. This card is used on board to purchase anything from casino chips to beverages. Cash is rarely used on board so think about leaving your cash in either your cabin safe or at the Purser's Desk. When it's time for shore excursions you'll want to be sure your cash, credit cards, boarding pass and passport are safe by using an organizer designed to fit underneath your clothing.
Keep It Clean
Many cruise lines offer laundry and dry cleaning services, often at a high price. Plan on bringing your own travel-sized delicate wash packets for cleaning saltwater from bathing suits in your cabin's sink. A travel-sized lint roller will keep your clothes looking crisp and clean, a must for the many activities on board and ashore. A compact sewing kit can handle any unexpected rips or tears while you're away from shore.
More Than One-Stop Shopping
One of the greatest things about cruising is the adventures and the new places you'll visit on shore. Bring a collapsible tote to bring your found treasures back to the boat. Choose a day pack for on-shore adventures that holds essentials.