I have 1 post that is not exactly plumb and the whole thing is slightly not level, but really close. I should have rented an auger to dig the holes. Tree roots did not budge. Kids are loving it. The oldest, who has been a real problem for us, is really eager to work on it. My son wants to know when he can play on it. He also wants a pole to slide down, a rope, and a zip line. And I miscalculated on the height. It is 8 feet to the bottom of the joist, not to the top of the floor. Oh well, they are insured.
My wife thinks she is gonna get to "decorate" the inside. Whut? My son probably sprained an eye muscle when she said that.