THE Duke and Duchess of Kent attended a gala performance of the Academy for Performing Arts' production of Guys And Dolls last night. They were greeted by the academy's council chairman, Dr Helmut Sohmen, when they arrived. Their official engagements will continue with the duchess visiting the Duchess of Kent Children's Hospital tomorrow. She will tour the hospital's physiotherapy and child development departments before attending a tea reception. Later in the afternoon she will meet some of the children patients who will present her with a souvenir. Meanwhile her husband, accompanied by the Governor Chris Patten, will attend a wreath-laying ceremony at the Sai Wan Ho military cemetery tomorrow. The royal couple's seven-day visit, which ends on Thursday, comes two weeks after Prince Charles visited the territory. Another celebrity in town yesterday was America's Gulf War president, George Bush . . . but no-one was saying why he was here. Mr Bush, ousted from office by Bill Clinton in 1992, arrived with his wife Barbara from Indonesia yesterday afternoon amid tight security for a one-night stay. The Bushes and their entourage stayed at the Mandarin Oriental and were believed to have taken a whole floor. Mr and Mrs Bush are scheduled to fly back to the United States today.