We went in January last year, it was a nice zoo. Not the largest variety of animals, but the habitats were nicely done and the zoo was exceptionally clean. The zoo had a lovely feeling and my kids really enjoyed it.
The zoo isnt that big that you shouldnt be able to easily see the whole zoo in one day. Make sure you catch the transport/train thing that goes around, the drivers give commentary as you go and it can be a good way to get between areas.
The Bindy show is just singing and dancing, wasnt really our thing. Its right before the Wildlife Warriors show - that was great! Dont be to tardy or seating can be hard to get (we went in school holidays though) The Irwin family were in attendance when we were there, but I think the show would be pretty good with or without them.
We went to a croc show held in one of the enclosures, wasnt going to but thought meh, why not. Glad we did - it was really good.
Wish we went to the birds of prey thing. Didnt go because I thought 'Birds, how exciting could that be' Then they had some birds at the crocoseum and they were actually really fun to watch.
Took the kids to the animal hospital, was interesting but a little underwhelming and would not rush to go back there.
We had an animal encounter, if it is within your budget and your not likely to go back for years and years then I would recommend it as being something you will fondly remember. Different encounters have different age restrictions and only a limited number are available for each encounter so you need to head to the kiosk and book as soon as you enter. We did the feed and photo with the Giraffes which was great and the kids really liked it. Our friends have previously had the Tortoise encounter and really enjoyed that.
There are a few feed the animal spots - Kangaroos and farm animals. Make sure you have some change to buy some food. From memory it was $3 a bag.
As already mentioned, if you can take your own lunch. The food was average at best and expensive, if you go after the Wildlife Warriors show - which starts at 12pm the lines are HUGE and you will be hard pressed to get a table. (Keeping in mind we went during the school holidays)
Will you be camping?