Well I pulled it out in the driveway last night. Then I went after it with the garden hose leak testing. Well, I sat inside and had somebody else hose it down. Flooding all the window seals and the
hatch seal and such. Everything was dry even the parts I was really worried about. But then I heard dripping and I kept asking anybody else was hearing anything. Nope.
I had some leaking at the hatch hinge. Hopping up on a stool showed that the grey putty tape wasn't stuck down as well as a person would like. A bit of mooshing and squishing with a putty knife along the edge and the seal was great. I left it outside overnight (the first time!) and it was still dry inside this morning which is great, since it rained overnight. More storms this afternoon. It'll get a pretty good wetness test.
Totally campable!