I use Hertz last time, and they have asia miles accrual for the rental. For cheaper car rental, you may try for budget. If you are travelling on Quatas, they have discount on either Hertz or Avis, but mostly you need to rent for a few days. You may check it out from their website. If you are booking hotels at the same time, they will offer discount for car rental also. Last time I book the hotel with accorhotels.com (the group with Novotel, Mercure and Ibis), they have discount car rental with Europcar.
HimHimMaMa,
Thanks for the info. I think the price is quite reasonable. As I found from some travel guide book that the cost from Brisbane to Gold Coast by coach/bus is around HK$175/person one way. I will travel with my husband and daughter. The cost for 3 persons is around HK$1,000 (return) so it is worth to rent a car. Why you return the car at Surfers Paradise, not Brisbane?
Which hotel you booked at Gold Coast? Because I haven't made up my mind, it is so many hotels there.
Will you go to Sydney as well? I will go to Sydney first and then fly to Brisbane during Easter.
HimHimMaMa,
We just decided not to go to Goldcoast and stay at Sydney for the whole journey. As we only have 8 days there, in order to have a relax holidays, we will travel in the city and the outskirts of Sydney. Therefore no need to rent a car. Anyway, hope you hv an enjoyable holiday in Australia. Very nice to chat with you here.