CAPE TOWN( Reuters)-The docking of the Europa passenger liner in Cape Town on Tuesday was meant to be a ribbon-cutting celebration marking the official start of the cruise ship season in South Africa's top tourist hub, the first since the COVID-19 pandemic hit. But international travel curbs on southern Africa, where the new Omicron coronavirus variant was first identified, have blown expectations of a bumper tourist season out of the water. The multi-storey, white luxury liner is the first to d