Les, if you plan to stay the night you will need a sleeping bag and maybe a tent or you could bring a mattress and sleep on the lounge room floor or veranda.
Bring something to eat and drink, stuff toput on the BBQ or in the Microwave.
Warm clothes, including a beannie as it can get quite chillie.
A telescope or Bino's or whatever you plan to observe with or just yourself, as there will be quite a few scopes to have a look through
Let me know if you plan to stay the night as there is another person who comes from Kilcoy who you might be able to team up with to find you way here
Look forward to catching up with you
Give me a PM if you need anymore info
Ron