Our driver Servio has been wonderful and has provided us with information about the area and has allowed us to maximize our time. We have been able to see many more things- than we would have if we were having to deal with a large group. We also didn't have to wait in lines as our guide was able to reserve our spots for the David, we just paid for the tickets at the box office and they helped me book the Pisa times.
We also walked around Michelangelo square, a church with a monastery, the old bridge and Piti palace.
The drive through the country side was worth it alone! It's not snow on the mountain side, its marble!
Due to the distance from the port and the ship- I highly suggest looking into a private tour that will maximize your time in Florence. It is much harder for me to leave Florence, than it was Rome, since I haven't been here before. It has left me, wanting for more.
I am happy to recommend the company I used, everything was flawless and well executed!