my wife and i are taking our 2 kids to disneyland for a few days in dec. and we're hiring a hertz car at beauvais airport,..according to there website childseats are compulsory for children under 11 and they charge a fee of 36 euros per seat which i think is pretty excessive considering the car itself is only 72 euros for 4 days..are the french police strict on this law?..i would never put my kids at risk but surely one child seat and my oldest strapped in back would be sufficient..