Inside Look: New Features on the Reimagined Mariner of the Seas After a $120 million investment, Mariner arrives to Miami amped up for a summer of thrills. ❮ Book Your Short Getaway! Ready to try the most maxed-out short getaway ever? With three- and four-night cruises sailing out of Miami, Mariner of the Seas is the perfect way to plus up your next vacation, so take a look at your weekday and weekend options here.