Also, many cruise lines feature onboard credit systems, which allow you to sign for all of your onboard purchases and shore excursions. Passengers can sign up for the cards after boarding the ship by presenting any major credit card. On the final morning of your cruise an itemized statement will be delivered to your cabin. A limited number of safe-deposit boxes are available at most Purser's Desks, free of charge. In addition, some cruise lines offer in-room safes.
Rules vary by cruise line.
Shore excursions usually include transportation, meals, refreshments, guides, and entrance fees as indicated. Please note that fares for shore excursions are subject to change without notice. Some of the countries you will be visiting may have more conservative ideas about dress than what you are accustomed to back home. To be on the safe side, always dress conservatively, avoiding shorts, short skirts above the knee, sleeveless shirts or blouses, and sleeveless dresses. Travelers should also wear comfortable, flat-soled walking shoes at all times.