Oh C*£% I have just read the small print for Haven..

[DoNotAsfinishedXmasshopping]

...and now apparently all adults must be resident at the same address (according to teh electoral role).

My parents always come with us....

Yeah, just write your address in for them on the registration form. It's just to stop hen/stag parties.

I wouldn't worry I don't think they are on the look out for wild rampant Grandparents .

But are they on the lookout for less rampant Grandparents that they could make £600 out of by making them hire their own caravan ?

I think its the rampant ones we all need to be wary of .

They aren't going to worry -- as Buckets says, it's just to stop hen/stag parties.