Your voucher is valid until 30th June 2019, for two people. This experience is available on Mondays, Tuesdays, Wednesdays and Thursdays, year-round (excluding Mother’s Day, Father’s Day, Valentine's Day and bank holidays). There is no minimum age. Boarding commences at 11.30am at Tower Pier; the boat leaves at 11.45am and returns to Tower Pier at 13.30pm. Seating is pre-allocated before the cruise takes place; your voucher entitles you to a standard seat on board. Window seats can be requested at the time of booking, but are not guaranteed. Most of the tables are located in the middle of the floor space and in very close proximity to each other, with each table (or pair of tables) seating four people. Aisles separate them from the window tables, which seat two people only.The boat must keep to a strict timetable and so latecomers will be unable to board the vessel. A reduced service may operate during the winter. All dates are subject to availability.