Cash rebates and discounted tickets are being rolled out at a major wine fair in Hong Kong to attract visitors as anti-government protests take a heavy toll on the city’s economy.The Hong Kong International Wine and Spirits Fair returns on Thursday with 1,075 exhibitors from 30 territories, showcasing products such as wines, spirits, accessories and equipment over three days. The event, organised by trade promotion body the Hong Kong Trade Development Council, is open to the public on Saturday,…