Seems like a good offer to me. Better than walking - And you can carry more booze.
To take advantage of SpeedFerries DayTrip you must depart and return within the same calendar day. Both legs of the journey must be used to comply with the terms and conditions. Please ensure that you check-in at least 45 minutes prior to your departure time. Limited space is allocated to this product. Availability is therefore not guaranteed.
Please note that currently DayTrips can be booked up to a maximum of 2 months in advance.