Oh... and if you are going to go into a restricted area you can just ask on the radio if it is active or not.
We were heading towards one that was marked as at our level and simply asked Reims Info for its status. The answer was quite amusing... we were first told it was inactive. Then that it would be active in 5 minutes time, and then that it was only active up to 2600 feet. Since we were at FL85 at the time we just ploughed on.