Two of our group who came last year hadn't been since 2015....they said similar, we were slowly wandering back to our camp in Paines at around 3-3.30am on the Saturday night and it felt like it was 10pm with the amount of people moving around.
As much as I've consistently gone for 20 years, a fair few of my friends have come on and off and some that came last year who hadn't been for 7-8 years all said about it feeling a lot busier on site.
Sitting round the campfire post headliners tailed off for our group around 2008/09 once the late night stuff really got going and people preferred to gurn away at dance stage all night rather than stare into a fire at the tents.