Driving in Paris city centre

[97lude]

I've booked a weekend at Disneyland Paris from 10th-12th July and am driving there. As we should be getting to Calais relatively early, I wanted to stop in the city centre for a few hours until the evening and then make my way to the resort. I've heard loads of horror stories about how it's a nightmare to get around but all I want to do is find a secure centrally located car park and leave my car there for a few hours. I may do this again on the afternoon of the 12th which is a Sunday as our ferry doesn't depart till late.

Any thoughts on how bad it is to drive there? Would it be worth leaving my car in a "park & ride" towards the north of the city and using public transport to make our way into the center and picking the car up later that evening?