Cruise ships all over the world can travel to Japan and South Korea, so which one saves money, cruise ships or airplanes?

There are essential differences between cruise tourism and travel to destination countries. Cruise tourism is mainly played on cruise ships. When you arrive at the port of the destination country, you can only disembark for a short time. Generally, when you go to Hong Kong in the morning and leave in the afternoon or evening, you can only go to one or two scenic spots, and it is impossible to travel in depth. But there are also many interesting places on the cruise ship, such as theaters, casinos, bars, game halls and so on. In terms of price, the prices of different rooms on the cruise vary greatly. If it is the cheapest price, it should be cheaper to take a cruise ship, because food and accommodation are all on board, and they are free.