If the OP doesnt know what it looks like already (unlikely) i would make a point of not spoiling the surprise by looking!
each to their own but i would not waste any time going to car henge or glastonbury on sea. They are both rubbish. GOS is fine for entertaining kids for a bit but otherwise, meh. Or rather, not what i am looking for in a festival
queing for the ribbon tower is pointless since the capacity increases, you will be there forever.