All things bright and beautiful. All things great and small.
All things wise and wonderful. The Lord God made them all. Cecil Frances Alexander 1818-1895
actully i won't choose Perth for 刺激及海灘.
i've been to Carins, gold coast, brisbane, sydney. 那兒就有你小朋友喜歡的刺激(hot air balloon) 及海灘 (gold coast)
but, for your request, i can propose like that.
Day 1: Perth city centre (u can have Golden Sun Cruises坐觀光船遊天鵝河+ Perth Mint博物館)
Day 2: busseiton & Margaret River (木碼頭+Merribrook retreat)
Day3: Bunbury, Fremantle, Burswood (同海豚swimming+ 參觀監獄)
Day4: Perth city centre(caversham Wildlife Park睇袋鼠)
Day 5: Lancelin (滑沙) Pinnacles Desert 睇石群