hi there..
the only camping for the moto gp is blue and green (houx annexe).
check out the website
http://www.gpfrancemoto.com/the bars in the village are open, or go into le mans/arnage.. but as for police last year i think there was the whole of la sarthe CRS in the area patrolling on bikes etc.
there is also a blanket ban on the sale of beer in all the supermarkets, but you can still buy wine and spirits!
enjoy