Took a while for them to get it working properly but it's pretty good now it's working. A small and easy improvement would be to show the end times of the acts on the favourites side bar so you can see quickly where they overlap.
It did work, but it keeps crashing only now, two days before leaving for Reading...
Accurate times and locatioms
Is the selection of music given to each artist what they will play at the festival?
Kept crashing. Couldn't show Friday in Reading and Saturday in Leeds. Pointless. Great idea but awful execution.