business is a rip (jet star in particular for what you get) just spring for the exit row upgrade - but man i hate jetstar (and they hate me after my last hawaii trip - went something like this
https://www.youtube.com/watch?v=9-VLtpSZh7o
now they play a warning about not drinking duty free booze on board (what did you think we were doing odering 60 cans of coke with ice).