We love animals so with my wife we visited several similar parks around Australia but Featherdale is definitely THE BEST, the cheapest and the least touristy! Very cheap compared to Taronga Zoo or Sydney Wildlife World and, most importantly, you don't have to pay for any pictures, even with a koala! In every other park they charged a minimum of 16 bucks. You get as close as possible to roos, koalas or emus and you can hand-feed many of the animals. The only disadvantage is the location (or maybe that's why there were so few people there). Definitely stop in Blacktown and go to Featherdale on your way to the Blue Mountains.
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