#4 San Francisco to San Francisco on the Seven Seas Mariner

Source: sohu.com

Don’t be fooled by the seemingly short journey. In 131 days, you’ll enjoy up to 337 free shore excursions, free first-class airfare, guaranteed priority dining reservations, unlimited wine and spirits, and even free onboard healthcare. The Master Suite is over 2000 square feet and will set you back $386,000 per person.