In reply to AJM:
There is a big car park on the left before you enter the village, I have (an many others too!) stayed in this car park in my van. During the peaks season (July-August I think) they charge to park there and you won't get away with sleeping there. Outside of peak season it seams to be tolerated. The police did turn up once while I was there (luckily while I was in Riglos for the day) took registartion numbers and said they'd be back in the evening to move people on, but they never did. I got the impressions they just like to scare people away if it gets a bit too busy. I was there about 2 and half years ago, so things may have changed!
Don't sleep in your van outside the car park, they definately don't like that!