Can someone please provide insight on travel from Tiburtina station around 10am on a Saturday to the Camp de Fiori area? I am traveling with my son and carry-on bags. We would prefer public transportation rather than a taxi as we are fine to see the sights along the way as we are not in a hurry and this is our first time to Rome. We are meeting up with 5 others (staying in Campo), and am also curious if anyone recommends the Roma Pass or other transportation "passes" or if walking is the best option. We will be in Rome Saturday through Tuesday (4 days) with 4 adults, three children (ages 11-15). Thank you!