Madman1,
First gidday, we go to Turtle Sands Caravan Park at Mon Repos for the break over Xmas. Great for the kids 11,11 and 13. Safe surf beach and an inlet at the southern end of the beach. Not exactly quiet at this time of year but a great place for the kids (and us) to unwind and relax...
Good fishing nearby or of the beach at the park.
Cheers.