MOSTLY COMMISERATION!
When I wake up in the night I can just get up and pee without waking up all the way as long as I don't turn on the light. I was quite a sleepwalker when I was younger, so maybe it's leftover from that. If I am semi-conscious a few minutes after I get in bed, I turn on the radio which is set to the most boring nighttime station. When the powers that be switch the night radio to something more perky I either find a more boring station or listen to Alan Watts recordings on my ipad. Foreign language recordings will also work for me.
Maybe it is helpful that I've had intermittent sleep issues all my life, so I don't think of it as any big deal.
Dehydration sucks.
Unless I have an IV, or am in Hawaii, I will always fail the 'tent test.' (Pinch up the skin on the back of the hand; if it stays in a tent then you are dehydrated. Ideally it should snap back flat.)
Each day is a gift, that's why it is called the present.