What is the best way to get to FCO from the cruise port besides private car
If time permits,, you can walk/bus/taxi to the Civitavecchia train station and take a train to FCO with a change at the Trastevere station for the shorter route (Termini for the longer). You can look here, using Civitavecchia and Fiumicino Aeroporto:
For flight direct to the US, be at the airport 3 hours prior to flight time.
Thanks for the info