Yes, your ticket will be scanned and exchanged for a wristband upon entry which allows you to come and go as you please from the festival site only.
There are NO passouts for any vehicles once you have entered the campground. Vehicles will not be allowed to come and go from the campground. If you need to move your vehicle for any reason you will not be able to bring it back inside the campground, at which point you will be directed to park in the Bluesfest car park, which will involve a daily fee. You may re-enter the campground on the day your camping ticket expires to pack up and leave the site.
There will be shuttle buses going to Byron Bay.