Riverboat Dining Cruise for Two - 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: This experience will last approximately 2 hours.Group Size: This voucher is for two adults.Weather Dependent: NoThe minimum age for this experience is 18 years old at most locations please check upon booking.Availability: This experience is available on selected Monday to Sunday dates and bank holiday Mondays throughout the year depending on location.