Riverside Luxury Cruises has opened reservations for its 2028 river cruise season, highlighted by the debut of Riverside Mahler, the newest addition to the line’s growing fleet. Set to sail the Rhine, Main and Danube rivers beginning in May 2028, Mahler will join sister ship Riverside Debussy to offer more choices for guests looking to explore Europe by river. Riverside Mozart will continue to sail the Upper and Lower Danube, while Riverside Ravel will take guests along the Rhône and Saône rivers in France. Guests who book any 2028 sailing before 30 June 2027 will receive an 18% discount on the sailing price, applicable to all suite categories and package types.