Hi Tan,
I live on the Gold Coast and you are right, there are so many places to choose from, it must be a nightmare!
When we go on holidays, we usually call
Queensland Accomodation Corporation on 1300 733 773. You can buy vouchers from them (we usually stay on the Sunshine Coast at the Outrigger), and it is excellent value. There are the obvious places to go, especially with the kids like the theme parks. You can get a three day theme park pass which saves you quite a bit of money. I think you get to go to Movie World, Sea World and Wet & Wild. All good fun. We used to have a season pass to Sea World, and the best time to go was on the weekends, because most of the tourists would do the theme park thing during the week, it all depends on how much time you have I guess. Appart from that I would probably just go for a wander through Surfers Paradise when you get here, there are heaps of tourist information places everywhere. There is also Currumbin Wildlife Park which is supposed to be great. They do park ranger half day tours for the kids which also apparently are excellent. As for the time of year to visit, who knows, depends on how much swimming you want to do. School hollidays are obviously very busy.
I hope this info is of some help - have a great holiday!
Donna. (New tourism minister for the Golds Coast
)
Gold Coast Holiday? 
. 
.
