The first image of a new theatre space has been released – nine months after its predecessor was destroyed by a falling tree. With days to go until the opening event on Saturday, the Festival Theatre on Three Sisters Lawn in the grounds of Hever Castle near Edenbridge is almost – but not quite – ready. The stage walls and gutters are still to be added. The previous festival theatre was semi-open, with a roof extending over only half the audience. It was too badly damaged by a falling tree last July to be repaired. So instead, the promoters have created a new theatre that will have covered seat…