Friedrich Joussen Ryanair Creates Huge Greek Summer Push Amid Mixed COVID Signals 5 years ago Ryanair announced its biggest ever Greek Summer schedule including 218 routes. Meanwhile, Greece's vaccination program lags behind. TUI’s CEO Friedrich Joussen Pokes a Nose Out After Months of Lockdown 6 years ago TUI CEO Friedrich Joussen calls Greece, Cyprus, Croatia, Bulgaria, Spain, Austria, and Denmark “well prepared” for the summer 2020.