Queen's Day 2012 in the Netherlands

Dutch Queen Beatrix, right, thanks well wishers as crown prince Willem Alexander, left, and his wife, Princess Maxima, look on at the end of festivities marking Queen's Day in Veenendaal, central Netherlands, April 30, 2012. The Dutch celebrate Queen's Day, a Dutch national holiday marking the birthday of the Queen's mother.

Dutch Queen Beatrix writes on the cast of a boy during festivities marking Queen's Day in Rhenen, central Netherlands, on April 30, 2012.

Dutch crown prince Willem Alexander takes part in a toilet throwing contest as his brother, Prince Constantijn, center, watches, during festivities marking Queen's Day in Rhenen, central Netherlands, April 30, 2012.

Netherlands' Queen Beatrix walks towards a stage as ticker tape rains down during festivities marking Queen's Day in Veenendaal, central Netherlands,, April 30, 2012.

Dutch crown prince Willem Alexander takes part in a toilet throwing contest during festivities marking Queen's Day in Rhenen, central Netherlands,, April 30, 2012.

Dutch Crown Prince Willem Alexander, in orange apron, serves food during festivities marking Queen's Day in Rhenen, central Netherlands, April 30, 2012.

Netherlands' Queen Beatrix and Crown Prince Willem Alexander are seen on stage at the end festivities marking Queen's Day in Rhenen, central Netherlands, April 30, 2012.

Prince Constantijn, foreground left, and Prince Floris, rear left, play a soccer game during festivities marking Queen's Day in Veenendaal, central Netherlands, April 30, 2012.

Dutch Crown Prince Willem Alexander helps his wife, Princess Maxima, as they take part in festivities marking Queen's Day in Veenendaal, central Netherlands, April 30, 2012.

009-AP120430033072.jpg--9.gif — AP Photo/Robin Utrecht, Pool

Dutch Queen Beatrix smiles during festivities marking Queen's Day in Veenendaal, central Netherlands, April 30, 2012.

Prince Maurits takes a picture with a smart phone during festivities marking Queen's Day in Rhenen, central Netherlands, April 30, 2012. The Dutch celebrate Queen's Day, a Dutch national holiday marking the birthday of the Queen's mother.

Orange-clad partygoers dance to the music in their boats on Amstel river in the village of Nes aan de Amstel, on their way back from Amsterdam, April 30, 2012.

Princess Maxima takes part in festivities marking Queen's Day in Rhenen, central Netherlands, April 30, 2012.

Dutch crown prince Willem Alexander, far left, and his wife, Princess Maxima, engage in a rope pulling contest during festivities marking Queen's Day in Rhenen, central Netherlands, April 30, 2012.