Our guide gave great info, but being it was a bus tour, only a brief time to look at each site as we drove by. Good enough considering this was mixed with the Vatican tours.
Colosseum Rating:
A brief 45 minute stop to walk around and take pictures.
Sistine Chapel Rating:
A must see whether or not you're religious.
St. Peter's Square Rating:
No time to take pictures in the square or time to wander.
A very helpful guide on the bus--gave his personal tips and a map with NCL's suggestions. Able to wander the city easily on our own. Escorted to Pisa's Field of Miracles for a brief photo stop.
Nice and Monaco Basically a transfer to the sites, the guide gave info on the bus and at each stop breifly before giving us about an hour and a half to wander on our own.