What is the best way to go from a hotel in Rome near the Termini train station to the cruise port in Civitavecchia for a party of 6?
There isn't any way I'd try to get six folks and luggage there on the train if they've never done it before. The best way, albeit not the cheapest, is a private shuttle. We've used Rome Cabs a number of times between the city and the airport and have always been pleased with the service and prices. They are a private car service despite the name. We always send an email with our needs and get a quote in less than 24 hours. Check them out at romecabs.com. At least I think that's the web site -- if not just google them.