I generally put the wireless off, screen brightness 0 to 4.
Despite the low power profile of ebook readers, i'm quite disillusioned in Amazon, that their kindle has compensated low power profile, with lower battery capacity
It results in a cheaper device, yet sold more than twice as expensive as competing devices out there... With the oasis you pay for the design, I guess...
Anyway, I do disable touch screen, but only for reading books. I do like the buttons more than the touch screen. Hate swiping,because of finger smudges, and comfort.