Generally, I thought attendance was down this year. The start and finish were not as packed as last year. And at the end of the race, the terraces were not jam-packed. There were hardly any Brits-in-chairs where we were (opposite the AM pit).
Arnage and Mulsanne enclosures were not very busy during the night. At sunrise at Mulsanne, there were about 50-60 people on the bank. The last two years have been much busier.
I thought the roads around the area were not as grid locked either. I know the ACO are always trying to improve the traffic flow, but the changes this year were either very effective or were not put to a full test.
The car parks near BN seemed to take a long time to fill up, especially for Thursday quali session.
I suspect there are a number of factors that kept numbers down; money worries, the thought of another wet weekend (not relevant to die hard race fans), the oiks have got bored of it, and the thought of another Audi win (maybe people doubted Pug will finally pull it off).
As for some of the campsites not being rammed, I expect is because of the ACO sold the pitches to agencies that then tried to cream too much profit from them (~40% mark-up and then 2 GE on top of that, with 30% mark-up each) and found themselves holding unsold tickets (I don’t pity them!).