Campsites.
It would be useful to indicate the general popularity of each site.
For instance for the last 5 years I've arrived on Thursday evening.
Two years ago we arrived in Bleu Sud to find it practically full, moved to the adjacent field to find lots of space, this year that was apparently not allowed.
This year we were in Bleu Nord , arrived Thursday evening at about 9pm and whilst it was filling up had no problems. Awoke the following morning to find it nearly full, arriving after about 10am and it would probably have been full.
So it would be useful for anyone planning to arrive late to book one of the "slower to fill" sites , as anyone booking MB would probably find it difficult even on Wednesday and impossible on Friday.
So whilst BSJ might be furthest from most of the action it must be the best bet for a late arrival.
Of course this is not an easy thing to gauge but forewarned is better than nothing.