Trade has started to recover at Alton Towers following a crash on its Smiler rollercoaster last year.
Its owners, Merlin Entertainments, said visitor numbers had picked up over summer, but that overall numbers "still remain some way below the 2014 level".
On Tuesday, the company was fined £5m for the incident, for which it has apologised.
Sixteen people were injured in June 2015, including including two teenage girls who needed leg amputations.
Chanda Chauhan, from Wednesbury, was among the victims. She had surgery to her stomach and treatment for a damaged liver and blood clots.