It is surprising they give free admissions and then make comments in the press that they are losing money and may have to close.
Its a really good set up but they find holidaymakers will not pay the normal 38 pound each to go in.
I did get a free ticket for my wife as she goes in as a carer due to the various ailments i have. Biggest problem being the Aneurysm which might explode one day and its lights out time.