if a farm park only has one alpaca it doesn't count, but if it has alpacas, cockatoos, emus, ostriches, whatever, then it can stay.
Actually I don't think alpacas count either as they are a domestic species not found in the wild, nor feral in Australia.
Similar argument could apply to camels as they are also extinct in the wild but of course feral in Australia.
I must say I am in two minds about Big Goose as it is very much a children's farm with the few non-domestics treated as domestics in the same type of enclosures etc. I just reported what I saw...
By the way Snowleopard your use of "exotic" in this context is a little confusing, in that in Australian zoos "exotic" refers to animals from overseas against "natives" and "domestic". So here a zoo without "exotics" would be one that has only "natives".