Your cabin vacation sounds a bit like Bill. We had a cabin and he would invite people up (like family) and then get upset about something and make everyone miserable. He never wanted anyone to stay long and if they did he would get into a snit. Of course, at that point they would leave. So therefore, we ended up with few visitors.
In retrospect I think our KY doctor suspected he had beginning dementia (one reason for one of the meds) but never put it in words or tested for it. She did document everything she told him - more than she normally would have had to - as he would deny she told him something during the next visit. And he would never follow her directions on sleep medications. Self protection.
I also didn't pay much attention to the blood test results - no idea about CKD until the move back to Phoenix when he was shown to be at Stage 3 within a month of moving here. Of course there wouldn't have been anything different she would have done other then the medications he was already on. And she might have told him when I wasn't with him and it didn't 'register' with him.
It sounds like your Will and my Bill have some things in common - like sweets!