Note: The following article is intended for U.S. citizens sailing round trip itineraries from U.S. ports. The rules discussed may not apply for other countries. You also shouldn't take this as legal advice. Contact your cruise line for their guidance if you would like to do a partial cruise. For most people, taking a cruise is simple. You hop on from a cruise port in the U.S., sail on the trip, and then return to the cruise port where you embarked. It's easy and convenient. These cruises that...
