A few counterpoints, as i think this thread needs a bit of balance:
On Thursday, I had a wonderful evening at strummerville, the stone circle, glasto latino and the circus tent. No major crowds. The stone circle had a load of drummers, fires, and no kids doing NOS - it was like being there 20 years ago.
Around the pyramid i found access to be comparatively easy and had no problems getting in or out. I noticed a lack of long chains of 16 year old girls pushing past (what happened to them?).
I went to Arcadia on Friday when it was very busy getting there. Seeing the crowds, went through the other stage and round the back to enter. Easy access and not too full in the field.
There are lots of people on the farm and there are moments where lots of people are trying to get from a to b at the same time. But if you wait a bit when its busy, think about alternative routes, and avoid the major over-demand (ie Williams Green on a Thursday), then it was completely fine in my view.