avalon
From my understanding after looking at the jestar website, avalon airport is going to be used when flying to and from mel to syd or bne
all other flights to and from mel will be at tullamarine in melbourne.
I have no idea why they have done this it seems really weird.
Also information on the Jetstar website says
"FREE SEATING
Like most low cost carriers Jetstar has a free seating policy. This means that you will not be allocated a boarding pass with a seat number and cannot request seats when you make a booking.
It does not mean that you will miss out on sitting with your family.
We will pre-board families and passengers with special needs.
All other passengers will be given a boarding priority on their boarding pass, this will be based on the time that you checked in.
For example: Passengers with numbers 1-50 will board the aircraft first followed by numbers 51 – 100. "