Houghy,
The water tanks could probably use a fill before the post-breakfast "showers" on Saturday morning...
These charts from the Weather Bureau show no rain expected after 9pm Friday (and that may mean rain ending well before 9pm) for the rest of the weekend.
http://www.bom.gov.au/products/IDG00074.shtml
It will be a great weekend nevertheless. Look forward to catching up with you all there.