Save $400 to $2,400 per couple on 2018 river cruises with American Queen Steamboat Company in certain cabin categories when you book and pay in full. Discover The Mighty Ohio You haven’t experienced Cincinnati until you step aboard a BB Riverboats cruise. And, when you do, you will want to share it with others. Early Friday morning, the American Queen, a giant steamboat hosting overnight passengers. said Cape Girardeau often…