✔ 最佳答案
not recommend australia la. 7-9 days too short for a big country. big not mean many tourists attractions! time consumptive in traffic jar!
i recommend New Zealand. north or south island. do not expect to visit two unless u wanna a very rush trip.
or Bali in indonesia. quite nice and enjoyable. food and culture are more chinese. easy to be adapt by the kid and elderly. and the weather wont be too hot in May. (June to Aug--very hot).
or thailand but the political situation is not so stable. probably not good for kid and elderly.