Assuming the 15% drop is correct, surely Thorpe should be looking at itself a bit more beyond "it's cos of the new ride"?
Especially when it's not been doing that well for a few years... Got to be lots more reasons for this, the lack of disposable income for their target market, the reputation the park has as unreliable and full of teenagers good and bad, awful queues, focusing on upselling fastrack...
Quite a few reasons why Thorpe isn't as successful as it would like to be...