We're traveling next year to Europe for a cruise from Rome, looking at airfare now seems like our best bet is to change planes in either Paris or Barcelona. We've never changed planes internationally before...does anyone know if we have to go through customs in France and again in Italy? It's with the same airline, just a plane transfer. Is it a hastle, should we suck it up and pay the extra $ for a direct flight? It's about $300 more per person, substantial to us.