Are recent flight Adelaide to Cairns - which we purchased at a very reasonable price thanks to one of Jetstar's numerous "Deals" offers- went very smoothly from start to finish, despite a 30 minute delay in leaving. With carry-on only and web check-in, the outgoing process form Adelaide was very fast. On the return leg from Cairns, the airline staff were weighing all carry-on bags 30 minutes or so before departure. They were very considerate with regard to helping those whose bags were overweight (7km maximum) offering helpful suggestions to lighten the load ( can you tie a jacket or jumper around your waist) rather than being overbearing. Well done !
And paying a little extra for extra legroom seats was very worthwhile - my husband and I are tall.
All in all, a pleasant experience .