Oh, and by the way, if you mention your preference when you make a PS, they only make a note of it - sometimes they can't/won't even do that much. They can't guarantee you that you will sit in your location of choice because it is not a real reservation in the traditional sense. It is a PS. Also, mitigating factors may determine where you sit before you get to WCT and they have no way of predicting how crowded they will be, etc.