1. Voltage, electrical socket and plugs in Australia?
Australian voltage / amp : 240 v / 50 Hz (same as Malaysian)

Socket

Suitable Malaysian plug - Australian socket adapter:

2. Where are we going to stay in Melbourne and Sydney?
We are stiil waiting for Melbourne and Sydney organisers to arrange accommodation for us. We will inform you once we know the location and type of accommodation we'll get. We'll know where we are staying in Sydney by mid-June.