You need a bone dry July. That course is soaked. 25 miles north we've had a top 5 wettest spring and it's been a lot worse down there. Large portions of it don't get much sun light. It's due to trees, but also the steep slopes if they're pointing in the wrong direction. Then those steep slopes lead to other areas collecting water that may or may not be tree covered.
But if we don't get a bone dry July you may actually be better off with a consequential amount of rain. The terrain is obviously going to vary throughout, but if my options are ankle-to-calf deep water or mud I'd want as much water as possible. Sure, soaked feet present their own set of problems, but I'd rather deal with that than what is more likely to happen after running through miles and miles of mud.
I doubt I'll bother going down there pre-race to give an update on the actual course. The mud and standing water I'm navigating in the much drier parks further north are enough for me. There is one long section you'll be happy you won't have to deal with with the course change. It's my favorite one to run, but in dry season's it's off limits in my mind until at least now. Unfortunately, I may not run it at all this year.