TEXT: TRH Prince Charles, the Prince of Wales, and his wife Camilla, the Duchess of Cornwall, in their role as the Duke and Duchess of Rothesay, take time out from their honeymoon at Birkhall on the Queen's Aberdeenshire estate, to undertake their first joint official engagement opening Monaltrie Park children's playground in Ballater near Balmoral on April 14, 2005 in Aberdeenshire, Scotland.