Eddie- Why don't you just call the cruise line and tell them your plans and ask them if that is ok to do? I can't believe they would turn you down for a transfer if you are willing to meet them at the airport with the other passengers. They can't expect everyone to risk flying in the same day on an international flight. We are coming in the day before our cruise too (but we are staying in Rome like Raoul suggested) Again, as long as you are not expecting them to go out of their way to pick you up, I can't believe they won't allow you to take the transfer from the airport the day OF the cruise.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007