Limit 2 vouchers per purchaser, additional as gifts • Limit 1 voucher per gift recipient • Limit 1 voucher per 2 people per visit • Boarding commences at boarding point 2 from 7:15pm, boat departs from Westminster Pier at 7:30pm, boat returns to Westminster Pier by 11pm • Departure days: July-September Wednesday to Sunday inclusive; October Thursday to Sunday inclusive; November Thursday to Saturday inclusive • Advanced booking required and subject to availability • Cancellation/re-scheduling policy of 24 hours applies; voucher subject to forfeiture • Please contact merchant directly, within 7 days of voucher-issue, for information on any special assistance required including disabled access - if the merchant's arrangements are not adequate for your requirements, LivingSocial will be happy to issue a refund under our standard cancellation policy • Please contact 0207 7400 400 prior to purchase for further information if required • Other conditions apply