ATHENS — Greece banned music in restaurants and bars and imposed a nighttime curfew on its popular holiday island of Mykonos on Saturday after a rise in new coronavirus infections there. Known as the party island of the super-rich, Mykonos is one of Greece’s most popular destinations, attracting more than a million visitors each summer, among them Hollywood stars, models and world-famous athletes. Following a “worrying” local outbreak, the Civil Protection Ministry said it was banning music on the island around the clock, including in shops, cafes and beach bars. It also said it would restrict movement between 1 a.m...