Use the form. It posts through FormSubmit to the monitored inbox. Include the park or itinerary you already care about, rider count, and whether you need hire.
The historic site published [email protected] and +61 3 9393 1355. Treat those as archive details unless we confirm them in a reply. Directory pages that still show the Williamstown workshop are not a live reception desk.
If you are a park manager or a licensed tour operator correcting a citation, say so in the first line. We will update the page.