Departure is from Embankment Pier. Guests are asked to present their voucher at the reception in exchange for a boarding card. The experience is available on Wednesdays and Saturdays only during May and Wednesday to Saturday from June to October. Vouchers are valid until 31st October 2018. Boarding time is 15.15, departing 15.30 and returning at 16.45. All bookings are subject to availability. It is recommended that guests book at least 8 weeks in advance to secure their chosen date. Minimum age is 3 (under 18’s must be accompanied by a full-paying adult). Disabled access is limited on board with toilets accessed only by stairs.