Airports are the gateways to the world's tourist destinations, witnessing the arrival and departure of millions of travellers every year. While their aisles emptied during the health crisis, duty free shops and departure lounges are once again filling up with international passengers. However, the intensive resumption of air traffic is presenting airports with a number of challenges, particularly in terms of human resources. How do you improve the customer experience when there are so many staff missing? What does the future hold for travel retail in Europe's major airports? How can we reconcile development and sustainability? These are just some of the questions that airport operators are trying to answer.