Do you have an early check-out from the hotel and are you planning to see everything you didn't manage to see during your trip on the last day? And how did you move around the city during the trip itself? I probably wouldn't be able to get seven people together on public transport, for example, and in Paris. I advise you to just order a Paris transfer online on the GetTransfer website, I often come to France and use their services. Usually I just order a transfer from the airport in advance to get to the hotel comfortably after the flight. You can choose a minivan, and in the comments write what you need, so that there is one child seat in the car. What did you manage to see during your trip to Paris? Have you been to the Louvre?