Hi. Sorry to highjack this thread but as a Brisbane Girl born and bred I disagree with staying at gold Coast. If you stay in Brisbane, you have a lot more option of either visiting Gold Coast (1 hour car ride) or Sunshine Coast (45 - 1 hr car ride). So, I believe staying in Brisbane is so much more advantages.
Firstly, get your hire car from Abel Rent-A-Car. They are by far the cheapest here in Brisbane and any of my family and friends that visit use them. They are great. The only bad thing is that they aren't in the Airport so to speak - the are off-site, but they come and pick you up out front in a bus when you arrive and take you to their depot (2 minutes away).
Next, I wouldn't recommend staying in the City. It is fantastic to visit for the day but you don't need to be there any further. The shopping is cheaper at the DFO (near the airport), and Southbank is better on the weekends, rather than during the week with entertainment, markets etc. Also, you really don't need to pay for 'city accommodation'.
I can recommend a stunning B&B in my area when once again, my family and friends have stayed at. Their website is www.firstavenuebb.com.au
There are several reasons I would recommend staying here. Firstly, you are within walking distance to shops, restaurants and the sea front which has a beautiful esplanade. You can even walk the esplanade to a children beach, playground in Shorncliffe (maybe 10 minute walk).
Secondly, and most importantly, the B&B is 2 minutes away from the Gateway Motorway, which is our main freeway which will take you directly to Gold Coast and/or Sunshine Coast. Only 15 minute drive from City too.
This B&B is really popular so if you choose to stay here, it would be worth calling asap.
Weather in July - It is our winter. My kids were born on 3rd July and we have a pool, and we have never been able to have a 'pool party' because it has been too cold. I would envisage it will be too cold to do the Water Parks but you may be lucky and get 'one day' where it is really hot, then you rush to them with everyone else!
As far as what to see and do:
GOLD COAST
1. Dreamworld - voted the best by the locals. Has all you want, rides, shows, games, zoo. I love it! (45 minute drive)
2. Movieworld - don't bother! As you can see on the reviews here, it is dated and does not cater for the public any more and a waste of your money.(55 minute drive)
3. Wet n' Wild -go there only if hot day - it is all water rides. (55 minute drive as next door to Movieworld)
4. Seaworld - Absolutely Fantastic for the oceanic wildlife experience. Good rides, food, shows. (1 hour drive)
5. Visit Surfers Paradise, namely Cavill Avenue (main mall part). Good fun right beside the beach. Lots of restaurants, shopping, Ripley's Believe it or not!
SUNSHINE COAST
1. Australia Zoo - voted Australia's No 1 Tourist Attraction - and so well deserved! It is well worth the visit/money. It is so well organised, set out, and it is always the highlight of my visitor's trip. Don't leave without going there (1 hour drive)
2. Mooloolaba - the social hub of the Sunshine Coast. good food, shopping etc.
BRISBANE
1. Southbank - it was built after we hosted Expo 88. During the week, it is really just restaurants and a man-made beach. On the weekends, there is street entertainment, markets etc. A great day out for the family.
2. Mt Cootha Lookout - this place is stunning. If you want a little drive up to the highest point in Brisbane, and 360 degree views, it is beautiful. There is also a restaurant here called The Summit. Pretty fancy and little expensive, so if you want a nice meal, definately worth booking and ask for a nice view table.
3. I wouldn't bother wasting your money going to any of our local Zoo's etc like Alma Park Zoo etc, I would dedicate your money and time to Australia Zoo.
If you want to stay in Noosa - stay on the main drag, Hastings Street. It is the 'posh' part of the Sunshine Coast. So expensive, but anywhere along here will be beautiful and great views.
Like I said, Mooloolaba is the more 'general social' part of Sunshine Coast. The locals love it (as do I). And Australia Zoo only 15 minutes away from here. Anywhere in Mooloolaba will be fine.
Sorry for waffling on, hope this helps. Feel free to email me if you need further info.
Tracey