HONG KONG—Hong Kong’s bars, restaurants, and caterers say tighter COVID-19 restrictions may cause hundreds of millions of dollars in losses, threaten jobs and even, for some, their survival. On Friday, 15 types of venues, including bars, clubs, gyms and beauty parlors had to close for at least two weeks. Restaurants can stay open until 6.00 p.m. but are only allowed to offer takeaway service after that. A manager at the Sun Kong restaurant, which serves dim sum in a working-class neighborhood, said staff usually got double their salary in the month before the Lunar New Year holiday, which begins on Feb. 1. But not this year. “We’ll be happy to get any salary this month,” said the manager, who only gave his last name of Chan. Tommy Cheung, a legislator representing the restaurant and catering industry, estimates businesses will lose up to HK$6 billion ($770 million) in the next two …