Here are the links to pre-book your tickets:
Elemental at 2pm
http://www.eventbrite.co.uk/.../open-air-cinema-tickets...
Wonka at 4:45pm.
http://www.eventbrite.co.uk/.../open-air-cinema-tickets...
Ticket Price:
£1 online (plus booking fee) if purchased in advance
£2 on the day