Mars tourism is an exotic challenge for rich extreme tourists from Earth. An all-inclusive tour to Mars consists of an extended space travel (back and forth), a temporary integration in the Martian population, optionally with hard work experience and optionally with safari. A key economic driver is the cost, if it costs hundreds of thousands of dollars to visit Mars, the number of tourists will be very low. If it costs a few tens of thousands of dollars, then a significant number of people might choose to visit Mars.
An important precondition is an interplanetary space ship with good radiation shielding to minimize the danger of DNA damage and cancer.
This idea is also a possible business model for investors and can be part of the Earth-Mars Trade.