The door to the Catista is an actual screen door and not just a flap. However, it does not come with flaps to cover the screens. I am sure that tarps could be used somehow. When we had been in our friends tent, we had no problems with rain. The tent folds up and unfolds very nicely. We added brackets to the base to screw into the wooden deck. We also tied two ropes to the deck and up through the 'hand' at the top of the tent inside so that it was kept in place. Sorry I didn't see your post earlier.