-THE “SOLD OUT” SIGNS had been posted nearly two weeks in -the High Sierra Theater Reservations Office at HOTEL SAHARA-TAHOE, yet hundreds aspiring be first-nighters to Americans largest theater-restaurant had to be pg®? turned away May 12 because of already-ca-1| pacify crowds at both opening night shows.Standing ovations and kud, long applause from | theatergoers threatened to interrupt perform-1ances of headliner PHYLLIS D1LLER and the ffiifi*5singing OSfoOND BROTHERS. The 12-minute |gs _ opening spectacular “Tivoli By Night,” choreo- |p|ff|pgraphed;by. MISS SONIA SHAW and produced by BLACKBURN AND . LEE, drew accolades. MissDiller and the Osmond Brothers will bein the 53 million High Sierra Theater through May-.30. Next on the bill will 'be “Mr. Show-manship” LIBERACE. The master showman will have with him songstress KAREN WESSLER and magician CHANNING POLLACK. The Liberace Show is scheduled through -lane 29. Reservations; for dinner or midnight shows can be obtained by writing High Sierra Theater Reservations, Sahara-Tahoe Hotel, Post Office Box “C,” Stateline, Nevada, or by phoning Edge wood, Nevada, 588-6233 or 588-6234.i