I'm going to bring my printed out itinerary (the one I posted an image of up above) for fun, so when I'm sitting at the airport and on the plane I can stare at it and get even more excited, lol. I'll probably just make myself a tiny cheat sheet card with my fp and dining reservation times/#s (and a few snack must-do's) just to have as a backup, but will mostly rely on my phone. I bring a portable charging pack with me, plus my phone is brand new right now, so I'm not too concerned about battery issues. Also, I no longer have the Samsung Note 7 so I know it won't blow up!
I don't follow a super detailed touring plan for each park so I don't need to have something like that with me as a reference.
And, I just purchased $400 worth of Disney gift cards with my new RED Card! Saved $20, I'll take it.