Currently it's difficult for newly made worlds to get attention since people typically flock to already popular worlds.
A "cruise" works by automatically moving all of the players who have signed up to a new world at regular intervals. All players on the cruise get put into the same new world (perhaps split among multiple instances), so they don't have to worry about worlds being empty and boring.
The cruise would move along every 15 minutes or so. Players would be able to vote every 15 minutes on whether to move the cruise along to the next location or stay in the current one. Players can also choose to get off the cruise at any time if they've found their new favourite world.
This is similar to the feature implemented by popular Japanese livestreaming service Nico video, which is incredibly popular and is a great way to give less well known users a bit of attention on their creations