RIYADH Saudi Arabia's planned futuristic mega-city known as NEOM has announced the opening of its "first physical showcase": a luxury Red Sea island featuring restaurants, hotels and yachting berths. The opening of the island, known as Sindalah, comes amid persistent doubts about NEOM's viability and ahead of a major investor forum sometimes referred to as "Davos in the Desert" which will begin in Riyadh tomorrow. "NEOM is committed to supporting the Kingdom's new era of luxury tourism, with