Cheapest southamton parking for 21days.
You can book car parking with BCP airport parking. They do port parking as well. They provide a shuttle bus the cruise terminal.
Fred. Olsen recommends CPS Ltd.(Cruise and Passenger Services Ltd.) on 0238 033 4883 or www.candps.co.uk/parking. They are very good and you leave your car within a short walk of the ship. All the details are in the FOCL brochure.
I too am going on this cruise and booked my car parking via my travel agent (thomas cook) It was £59.00 and i think it was booked via Holiday Extras. Company used is cruise parking ltd and they too provide free shuttle bus to port. May see you onboard kind regards.