Sorry, not sure what I need to be clued in about?? I was under the assumption the post that @Gazza made was speculation on his behalf, which he has now stated was a random guess.
I also stated that my post was speculation based off some very brief google searching and from what has already been mentioned in the thread so far. I am happy for my speculation to be way off, just pointing out what I have found with no other knowledge
I would say Gumbaya Park is pretty established, opening in 1978, albeit relatively small and underdeveloped.
A new consortium has recently purchased the park, as posted by @ash.1111 above, and with this info on linkedin (Mark Shaw), looks like they will have a reasonable capex to run with for expansion ( I have made bold the relevant part):
Gumbaya Park, according to articles found online, is also one of only 4 establishments in Victoria that holds a zoo license (Presumably the other 3 being Melbourne Zoo, Werribee Zoo and Healesville Sanctuary). So this ties in well with the animal tag that is attached to this thread. To my knowledge, Adventure Park to not have any animal enclosures or animals on display? Again, I am happy to be wrong, but I am leaning towards Gumbaya Park as the basis of this topic.
And with 420 odd acres to play with, loads of space!!