I visited Queensland in chennai last month. Park was very huge and spread over a large area. There was no any vehicle to travel in park and important riders were far apart.
There was a coasta rider in park which was car like cabin to accommodate . I boarded on rider and it was not so fast n furious . Speed was slow and there was no train rider. I also feel disappointed without water park in Queensland .
I reached park via personal cab from chennai central. However there were public transport facilities also there for theme park which is cheaper. I reached in half an hour via cab but public transport may took 1 hour to reach.
Overall not a very good place but yes it was good for weekend picnics.