So happy to hear you plan on visiting Healesville Sanctuary
My family has an annual Zoo membership (called a Friends Of The Zoo or FOTZ) for Victoria's 3 Zoos; Melbourne Zoo, Werribee Open Range (an open African Savannah Style) and Healesville Sanctuary (Aussie animals). We live 20 mins from Helaesville so we visit a lot!
I have just started reading your WDW trip report and noticed your daughter likes the FOW show - Healesville has it's own bird show called "Spirits of the Sky" which runs twice a day and is included in the admission. It is a must see, showcasing lots of different Aussie birds and some Aboriginal dreamtime stories. On some days at the end an Aboriginal man whose mother was part of the tribe that used to live on the lands of the Sanctuary comes out and plays the didgeridoo and shows how to throw a boomerang. He is very entertaining but doesn't seem to follow a schedule of when he performs..
Also at the Sanctuary they have "magic moments" which is an extra fee ($10 per person) where you get to chose an animal for a close up encounter. You can meet a Koala, Kangaroo, Tree Kangaroo, Dingo, Emu or Reptiles. You get to pat them and sometimes feed them depending on the animal. Obviously for O/S guests the Koala or Kangaroo would probably be the most popular
I think it is definitely worth the money..
And on weekends/public holidays and school holidays children are admitted to all 3 Zoos free. If you ring the Sanctuary a day or two before you visit you can book a free tour with a volunteer guide.
I'm sure you have seen it but here is the link to the Zoos Victoria website:
http://www.zoo.org.au/Default.aspx?DN=ac7a272b-6304-4228-a162-731ba6dd45e8 you can choose "Healesville" from the tabs across the top.
Food at the Sanctuary is actually pretty good for a tourist destination - they focus on local Yarra Valley produce - but it is expensive. You pass through the township of Healesville on your way to the Sanctuary where there is a Coles supermarket and a very nice bakery (
http://www.beechworthbakery.com/File.axd?id=0a5b3ab2-454d-4a0b-99a2-8a3ec3931ee2 for the menu and prices
http://www.beechworthbakery.com/Pages/Bakeries/Healesville.aspx for the location). You are more than welcome to bring food and drinks into the Sanctuary and there are quite a few water bubblers/fountains around to fill up a bottle.
About 15 mins from Healesville is the town of Yarra Glen, if you are looking for a great playground for your daughter then this is it! It is called McKenzie reserve and is very easy to find on the Main St, it was only opened last year and was built after the Black Saturday bush fires from money donated by Tesco (supermarket chain in England/Ireland). It cost over half a million AUD and as well as very imaginative play equipment there are lots of BBQs and areas for a picnic. Yarra Glen has a very nice pub (Yarra Glen Grand Hotel -
http://www.yarravalleygrand.com.au/ and
http://www.yarravalleygrand.com.au/images/bistro2.pdf for menu) which is child friendly and had great food including $6.50 for a children's meal with soft drink and jello desert). It is an historic old building and many locals sheltered there during and after the Black Saturday fires.
If you have any questions (after my essay!) fire away