Alcohol and Camper Vans

Sat winding down watching braindead telly of police stops and Thin Marrow has just posed an interesting question:

We understand that being in your car with the keys and being over the limit can lead to arrest for “drunk in charge”. What if you have a camper van and are in there for a night’s kip?

In a camping spot in a campground they wouldn’t hasle you unless you started the vehicle. Pulled over along the highway and getting drunk would get you jail time.