We've gathered all of the 4 Night - Budapest, Bratislava & Vienna : a Danube Discovery River Cruise - MS Riviera Radiance specials ordered by sail date. Click on a special and select a sail date to get a single cruise quote from the cruise agency that posted that particular special. To search through all cruise itineraries (not just 4 Night - Budapest, Bratislava & Vienna : a Danube Discovery River Cruise - MS Riviera Radiances) to receive multiple custom cruise options to compare, please visit our Cruise Search page.