Van Insurance on a seasonal pitch

I thought others might find this useful. 

We are shortly to move our van onto a seasonal pitch on a CAMC site and have club 5C's insurance. As the van will not always be occupied, I thought I would check the van insurance. There was nothing specific about seasonal pitches. However, we get a discount for storage in a CASSOA  Gold standard compound. In the bit where it explains the discount, it states that it must be stored in a gold standard compound when not in use, except for a short period at the home address for trip preparation.

As a result of reading that, I phoned to get advice. I was told that we would have to be signed off the discount for the period the van was on the seasonal. I have no problem with that, it sort of makes sense and is only costing me a few pounds. However, I wonder how many others in our position don't bother to check and therefore would not be covered.