With school holidays starting in mid december would I be best off doing it in reverse order i.e. Agnes first then Fraser Island etc? Or are the other Sunshine Coast spots likely to be just as full come mid December?
All the coastal areas will be busy and fairly well booked come school summer holidays but if you get in early you should be ok. However it will still be pretty busy.
I used to camp up at Inskip every Xmas and by the week before the school holidays started all the good spots would be taken. Many people would go up and set up camp (return to work) just so they could get the spot they wanted.