Had a very smooth and pleasant self-drive trip in Europe. Both pickup and return were on the 8th floor of Charles de Gaulle Terminal 1. The signs are very clear.

On returning the car at 9 am, there was only one lady at the check in counter inside the office. She was also the one that had to go out to check the vehicle conditions, the fuel used etc and can process 1 customer every 15 minutes or so. There were 6 people on line and you can estimate how long it took her. I almost missed my flight because of this!