Shops and duty free
Both terminals carry a standard airport retail mix, and the prices drop when your destination is beyond the European Union.
Duty free
Perfume, spirits and tobacco at duty-free prices when you are flying outside the EU; your boarding pass does the paperwork at the till.
Catalan souvenirs
Local wine, cava, turrón and good tinned goods make better gifts than most of what airport merchandising offers.
Practical services
Pharmacies, press, SIM vendors and a left-luggage office cover the gaps; the left-luggage desk earns its keep on a long layover.