Business Week – Las Vegas Sands Corp. has asked Singapore authorities for more land to increase rooms at its resort in the city-state by about 60 percent after facing almost full occupancy, billionaire Chairman Sheldon Adelson says. The world’s biggest casino operator plans to add 1,500 rooms to the 2,563-room Marina Bay Sands, Adelson said at a briefing in Singapore today. The company will also add meeting rooms, ballrooms and exhibition spaces to the $6 billion casino resort and largest hotel in Singapore, when the government releases more land, he said. “We need more rooms,” Adelson said. “We are running…