Great info, thanks for the flyertalk specificity on directions and hours!
Luggage? What's that?
I never check bags if I can help it: Osprey or a Arcteryx backpack. That's it. Four minute walk sounds like the better thing than catching a separate bus with a wait.
I just need to figure figure out if I need an Octopus card AND a 2-person Airport Express ticket Or just pay for it alll on Octo.