Have I understood this correctly - some campsites are refusing to accept camper vans converted from transporters if they are classed by DVLA as 'van with windows'??? How on earth does the campsite know? And what difference does it make to them (unless you're planning on tooling it round their campsite at over the speed limit!)
No, what you have understood is someone has said that campsites are refusing to take some converted vans.
I must look out for these campsites that require you to show them your V5 details upon entry .