Bob Iger did a much, much, much better job with this property did than Eisner did with Hong Kong. He took the time and spent the money to really make this property stellar. I don't hate Eisner like many other fans do, but I will admit that several of the parks built with him in charge were too small, not enough attractions, not well planned out, etc. Hong Kong obviously was never intended to be as big or successful as this one however they should have done better than they did. Shanghai is a massive improvement over any of the other parks built in the past 20 years.
Also just because the park is being littered and people are going to the bathroom outside of the restrooms doesn't mean the park isn't going to be a success. That won't bother anyone except for non-Chinese. I've been to theme parks in China and they all have this including the "bumrush" lines. It's not going to keep people from going.