We did this a couple of years ago, so it may be different now. We made an early stop to get good pix of the Eiffel Tower and wish we had left there, but you Need to find out how to get to the bus to return! The drive through the city was frustrating because of the traffic! We drove around in circles because of the streets( we passed the opera house 3 times!). We sat at a light for literally 15 minutes, to “see” Notre Dame, then we turned the corner and saw it for 3 seconds on the move. Again, perhaps they’ve changed it now. It would be better for them to drive in and just drop off and let people spend the time seeing what they want to see.