Crowds will still be on the busier side till after the 19th when the schools down there go back in session.I looked at 3 crowd calendars and they all show crowds dying down after the 18th( hotel rates also drop on the 18th )Which is why I picked that week
Crowds will be lower at that time than they will be early August. However, with Transformers and the new Springfield area opening this summer, expect crowds to be larger than normal.