Expires 4 months after purchase. Limit 1 per 2 or 4 people, may buy 3 additional as gifts. Mandatory booking required. Check availability here and book here. 24-hour cancellation policy. Under 14s can enter for free. Under 18s must be accompanied by an adult. Valid on option purchased only. Verified using our merchant's website on 10 Jul 2017. Groupon sells the voucher and collects your payment; the Merchant provides the service. For support and inquiries, please go to the Contact Us section. Merchant is solely responsible to purchasers for the care and quality of the advertised products and services.