Revellers flocked to Ocean Park’s reopening on Friday as bars and karaoke lounges were among the Hong Kong entertainment venues welcoming back customers under the latest relaxation of social-distancing measures.The theme park in Aberdeen opened its doors from about 10am after closing for more than two months during the city’s third wave of Covid-19.‘Fourth wave may be worse’: Hong Kong eyes Covid-19 vaccine for double populationMost of the first 20 or so visitors waiting outside the gates early…