Heard rumours of a 3d show, but assume it will need glasses - anyone been to one, will they hand them out?

I can possibly see the appeal in a seated venue but it seems an odd concept at a festival. Interesting to see how it pans out but not sure it's needed really

They also handed out glasses when they played latitude. If I remember correctly, there was a scramble to get them as there either a)wasn't enough or b) people took them and then didn't bother watching them....

I still have my Latitude Kraftwerk glasses, maybe I should bring them just in case.  And remembering what the laser show was like on the large flat field that is the main stage at Latitude, I'm expecting it to be even more spectacular on the Mountain Stage.

Were they the old style red/blue ones or the newer black ones you get at the cinema?