Most (if not all?) of the first & second floor crawl spaces, which had motion activated sound effects, were closed off. Of particular note was a cargo net structure that was directly over the animated shark fins you pass by on the Bilge Rat Barges... literally it was open air below the cargo net, water was below you. The cargo was heavily reinforced, but my guess is legal took a gander, imagined some kid dropping his or her expensive phone through a hole and into the water, and closed it on the spot.