A unique festival and birthday celebrations are highlights of Sea Cloud Cruises’`River Cloud II season for 2012. Floriade, the World Horticultural, Expo happens only once every 10 years. the Dutch city of Venlo and an eight- day voyage beginning in Amsterdam May 17 includes a visit to the exhibition and demonstrations on board by master florists. After a series of spring and early summer cruises on the Rhine, Mosel and Main, River Cloud II shifts to the Danube in July for a series of culinary and cultural cruises. A feature is a cruise from Budapest July 19 that celebrates the 150th anniversary of the birth of Gustav Klimt with painting classes and exclusive tours. Another is a celebration of the 150th anniversary of Claude Debussy, with private receptions and concerts. Fares for eight day cruises start at 1,745 Euros a person.