I had the following useful exchange of emails w/ the Camping Association of Serbia.
Their email address is supposed to be:
but our email was sent back from there . . .
However, it must have got through in the end and the chap who replied was:
On 14.10.2011., at 15.40, "David & Helen Homewood" <[email protected]
> We are hoping to travel through Serbia in a campervan, either December 2011 or March 2012, en route for Greece and Turkey from France.
> It would be useful to know which campsites will be open at that time, and if there are other places where we can park overnight in winter.
> Many thanks !
> Helen and David Homewood
Dear Helen and David,
there are no campsites that are opened in the winter.
But, you can use many of village households as alternative.
Please, let me know more about your arrival when you will be sure and I will try to help you by sending some more information.
Vladimir Djumic - Camping Association of Serbia