I never had the stomach for Fakebook, tiggerdad. You're a better man than I am for trying it.
Prouddad, you're brave for going to the Fort and WDW in late May. That is the latest I ever did one of my trips (see my signature below). My one piece of advice is to set low expectations in the parks for what you'll accomplish and chalk the rest up to covering it on a future trip.
I like a lazy day at the Fort between park days with a trip to Disney Springs or putt putt or an ADR at a nonFW resort for lunch or dinner as the schedule allows.
The OP has stayed in a cabin before, so they kinda know the lay of the land, but the more they encounter it - I think the more they'll like it.
Bama Ed
PS - although in late May to early June it starts to get hot.

Me no likey all that sun....