WMmMonday, March 31, 19696 IAS VEGAS SUNSING-OUT AT PRESS CLUB BANQUET—The happy sounds of the LasVegas Ambassadors will greet guests at the April 5 installation dinner of new officers of the Las Vegas Press Club at the Sands. Herb Klein,President Nixon's Communications Director for the Executive Branch of the Federal Government, will be featured speaker. Reservationsmay be made by calling the LVPC, 734-9946, daily after 4 p.m.