|The Simple English Wiktionary has a definition for: cruise.|
Today's cruise ships are like floating hotels. They have a complete "hospitality staff" (to serve food and help passengers in other ways) as well as the usual ship's crew. The largest cruise ships have casinos, shops, many restaurants, several pools, and a running track. The most expensive cruises often have more crew and staff than passengers. This means that the people who control the cruise can give many personal services.
Today, hundreds of cruise ships sail all over the world. Some carry over 3,000 passengers. These are some of the largest ships ever built. For some places, such as Antarctica, because it lacks other way of regular transport, cruise ships are one of the only way for tourists to visit.