Outdoor opera is back in the Greek capital Athens, with thousands enjoying a show at the Akropolis for the first time since the pandemic. They were welcomed back with “Rigoletto” by Giuseppe Verdi, staged at the ancient Herodion amphitheatre below the Acropolis in Athens. That was a welcome treat for fans of classical music after the Greek National Opera’s (GNO) traditional summer performances were twice postponed in 2020 and 2021 under pandemic restrictions. “It took a long time, but we are very happy,” a spokesperson for the Greek National Opera said on Friday. A day earlier, a Latvian touri…