?BIRTHDAY DE AVANCE? WAS how Ilocos Norte Rep. Bongbong Marcos described the party his sister Imee hosted Nov. 12 at the Marcos home in San Juan. Some 200 guests, mostly political allies of the Marcoses, attended the gathering that that ended at midnight. The cast of ?Pinta Kasi,? the movie Imee is producing under the Creative Media and Film Society of the Philippines, were also present: Alwyn Uytingco, Alcris Galura, JM de Guzman and Maya Carandang. Actress Elizabeth Oropeza was also spotted. Imelda Marcos gifted her 54-year-old daughter with a song. Marinel R. Cruz