Just a couple of things I remember from my time at Dreamworld
It was never a Dreamworld helicopter. It was operated by a third party that paid some sort of fee to Dreamworld to be able to operate there.
The operation barely scraped by financially with a cross hired 206 so any discussion about twin operations from Dreamworld is just fantasy.
The approach and departure was not over any cars or buses. Yes it was tight and it was in and out the same way but it was over a sectioned off area at the edge of the carpark.
There was a wind limit on the pad stated in the ops manual as obviously with the in and out approach it wasn't always possible to arrive and depart into wind.
The ops manual stipulated that the pad was only available to pilots that had been trained and checked on the pad. No checkride..No permission to land. From memory this was a CASA requirement.
Matsumi was the senior pilot at Dreamworld when I was there 6 or 7 years ago so I guess by now he must have some idea of what he was doing there.
No doubt it is less than the ideal spot to operate from and the margin for error was on the skinny side but it was legal and approved and occasionally when you fly helicopters for a living thats just the way it is.