Gents,
I go over quite a bit. (still waiting for the paper work to complete before I get my house out there, )
First there is speed camera's and they CAN pass the details onto UK DVLA, so exchange points. They are all typically signed, BUT the cameras are not painted yellow as in UK. Everyone I have seen is forward facing.
I have been flashed a few times but never been chased up yet, so do not think they are enforcing it. But be warned.
As for the toll booth, they will not charge you but the police do have the right too if they happen to be there and also in the mood they can do you. They typically use the toll area's as tea-break areas so it will just be bad luck if they are having a break and trying to chat up the toll booth lady. I have gone thru tolls 40+ times and lets just say not many are below the limit.
If you are planning a long trip or being there, could be worth getting the toll system charging unit. that way you miss the queues and also, since toll booth will be on wrong side, then you will not have to rely on missus bashing the car door against wall.
Take safety kit, triangle, yellow jacket spare bulbs etc as that can lead to instant fine.
Make sure wife has driver lic with her. If you get nicked and they take your lic away, they will not let you carry on without proving the NEW driver has one.
Last piece of advice, see if you are out same time as Le Mans 24. If so the police will nick you at any given opportunity and you really do not want to argue with them.
But it is a great place, so enjoy.