Hopefully by early next year I'll be driving my new everyday chair. I've had my current Quantum 6000z chair for almost a decade now, and will be getting an Ottobock B6R rear-wheel drive chair. Gonna be a bit of an adjustment period going from a mid-wheel drive to a rear-wheel drive again.
Unfortunately I don't have any back-up plan regarding my Cpap machine at night. It's probably something I would need to consider doing in the event of a blackout. When it currently occurs I just take my mask off and try to fall back to sleep, but it's probably not the best fallback option.
A friend of mine works for getaboutable, which is like an aggregate website for accessible traveling and has some features to help with finding accessible accommodation too throughout Australia!
I realise that I'm about a year and a half late with my contribution to this thread, but hopefully there's some lurkers that might find this info helpful. 