The Danish royal couple, King Frederik X and Queen Mary, have arrived in the northern German state of Schleswig-Holstein on Tuesday for a one-day visit. The state’s premier, Daniel Günther, received the Danish royals in the city of Kiel. “What a beautiful morning,” said Mary after getting out of the limousine. A crowd of around 200 or so onlookers also gathered to greet the royal couple. They shook hands and exchanged a few words. Several groups of children enthusiastically waved Danish flags. The Danish royals are expected to attend the opening of an energy conference at the GEOMAR Helmholtz …