ok seeing as I have juts come back from travelling QLD

starting from the bottom, skip the expensive theme parks not worth it in my opinion kids too little to appreciate

agnes water beautiful relaxing I have a property there so I may be biased LOL
eungulla amazing little camp ground in eungulla its self they do have a cabin or 2 but if you have tents pick a pwd sit will cost you with the 3 kids $30 a night beautiful beautiful views over the pinoeeer valley below...you can go for a drive 5min to see platypus in the wild many many bush walks
bowen stunning peaceful quiet town (australia the movie was filmed there) you can walk out on the jetty pretend you are nicole kidman LOL ..big 4 park is the tops just beautiful
mission beach not a lot to do but because of the cyclone damage I encourage all to visit to help there economy
port douglas again big 4 park stunning.... close enough to drive into cairns to do usual tourist stuff
atherton just inland of cairns againn big 4 park LOL..there is a place called crystal caves amazing gem displays google it fantastic t

so those are my picks away from the usual tourist hype