royal palace 88Tours of the Royal Palace . The Royal Palace in Oslo is usually open to the public every year from late June until the middle of August. The guided tour takes visitors through some of the most important and lovely rooms in the Palace.Oktoberfest at the Royal Palace. Concert by Markus Wolfhart, Stereo Orchestra, Robin Léon and the Royal Palace dancers. Meal included (excluding drinks): veal Wienerschnitzel, fries,