Adrenaline at Heights - Key InfoVoucher Validation Your voucher is valid until 01 Jul 20 You must validate book and use your voucher within the voucher expiry date.Duration: The duration will vary depending on your chosen experience.Weather Dependent: NoRestrictions and Considerations: These experiences may not be suitable for those who suffer from any medical conditions or are pregnant. Any concern over medical/health issues should be checked at the time of booking.The minimum age will vary depending on your chosen experience.Availability: The availability will vary depending on your chosen experience as will the seasons.