Could be that the election announcement has messed up the Leftfield line-up, although you wouldn't think they'd delay the entire festival for that reason.
I think Nia Archives before Justice will also influence people (in that they are both electronic/dance acts). I reckon it will be heaving.
It's crazy they aren't headlining the other stage.
All forecasts worry me this year.
48 hours before Bearded Theory the forecast was for little or no rain on the Wednesday. We had over 70mm, more than a months rain in a day and setting a new rainfall record.
3 days ago the forecast for next week was 20 degrees plus sunny and warm. Now the forecast is 11 degrees with showers and rain and even 'wintery showers' over the highest ground.
The weather pattern has gone bonkers and on several occasions this year has little or no historical similarities to use to forecast accurately hence getting things so wrong.
All that said - all my faith is in the monthly forecasts the BBC and Met Office have out now cos they have to be right sooner or later.