You will not have any problems, I am sure. Last time I flew Alitalia was in 1998 and I was flying from JFK-MXP on an Alitalia 767 and I was allowed to visit the cockpit. When I asked, we were still near the Canadian coastline, however the pilots relayed a message to the flight attendant that I could visit the cockpit after we had started the transatlantic crossing. Also, I was allowed to visit the cockpit of an Alitalia A321 while we were parked at the gate. Finally, I was allowed to visit the cockpit of an Alitalia MD-80 while descending into FCO on a flight from Palermo, Sicily (PMO)...very interesting. Therefore, I doubt you will have any trouble visiting. Enjoy your flight with Alitalia.