A cruise ship has installed a roller coaster and a U.S. hotel is using robots to deliver room service, would female travelers like to see “women’s only” sections on flights? In our Smarter Traveler segment, Mark shares the list, which features his personal pet-peeve, Mark has spent much of the week on a steamboat on the Mississippi River. Reporter Clayton Whitehead joins him to talk about the cruise and some of its destinations in Mississippi, We also talk with the ship’s “Riverlorian,” the steamboat version of a floating historian, and Mark gives his review of the American Queen.