Depending on the your departure and arrival destination, the trip usually takes about two weeks.
Depends on the vessel. But why would you want to?
Hitler is Scary
20 minutes
A large cruise ship can take between 6 and 7 hours to get from New Orleans out to the Gulf of Mexico.
The Carnival Pride is a cruise ship that made her maiden voyage in 2008 from Long Beach, California to Mexico with the Carnival Cruise Line. This ship is a whopping 963 feet long and is very family oriented.
The closest islands that are a part of Polynesia are the Hawai'ian Islands, and it would take about 1-2 weeks to cruise to them from California at cruise ship speeds.
Orlando is an inland city, so one would typically cruise to and from Port Canaveral.
My cruise ship was about 300 yards long
A lot depends on the number of stops you take along the way. The best way to check for this is to visit the cruise lines website and check itineraries. Every cruise line is offering different ports of call enroute to Europe. The crossing from the USA trans-Atlantic to Europe is about 4-5 days.
Cruises depart from several U.S. costal cities. Some examples of where you could port from would be Miami, Long Beach (Los Angeles), or San Diego.
Depending on the cities you are traveling between, it can take between 13 hours (Mexico City-Lisbon) up to 16 hours (Mexico City-Moscow) or more.
Boat tours in Mexico can often last a variable amount of time. It depends on if you're going on a cruise or if you're just going on a single day tour. If it's a cruise, it can take up to 2 days, but if it is the latter you could expect an afternoon excursion at most.