Just to let every one know that,
In observance of the Independence Day Holiday, Norfolk Southern will curtail freight operations beginning 7:00 AM on Saturday, July 4, and resume normal operations at 7:00 AM, Sunday , July 5. Interline gateways will remain open for traffic delivered from connecting carriers and passenger trains will continue to operate through the Holiday.
I got this from NS website, If you go July 3 It should be really busy.
It was the last holiday, letting you know before you go.