I will arrive in FCO on a Saturday night and stay overnight at the airport Hilton. The next morning at 10:00 AM, a friend will arrive at FCO, where we will meet up and drive out to Umbria. I'm trying to coordinate her flight arrival with my pick up of the rental car at Hertz. Considerations: (A) She has an Italian passport. (B) We will both have international coverage with our cell phones to communicate.
The only threads I've read on this topic come from a TripAdvisor post made six years ago. It mentioned an electronically monitored 15-minute time limit in front of each arrival terminal that fines you if you go over time and a one-hour parking lot some farther distance away. The airport car rental and parking structures have been upgraded in recent years, so I can only guess what it’s like now.
How would you coordinate the pickup, given all the moving parts?