The 2nd day has some great smaller names.
For the 3rd day, highly recommend Jacques and The Blaze (two french electro acts). Jacques might be weird but The Blaze are really good (check out their song Territory).
Listened to it on 6music, so no visuals. I drank and smoked a lot before that watching an Arcade Fire concert (amazing too) so my friend and I just laid down, closed our eyes and... tripped I'd say! So fucking beautiful!!