Originally Posted by m4a1mustang

From the park website:


Picnicking at the William Houck Area


Picnic tables and grills are available near the lake area on a first come, first served basis. There are no cover pavilions or shelters in this area. Please remember to arrive early as the park often reaches capacity by mid to late morning on weekends, holidays and even some weekdays during the summer swim season.
Picnicking in the Manor Area

Picnic tables and grills are available on a first-come, first-served basis. A picnic shelter is available by reservation only. The shelter holds 150 people. The shelter was built by the Civilian Conservation Corps (CCC) out of native stone many years prior to the installation of Route 15. It is recommended that you visit the shelter prior to making your reservation due to its proximity to the highway.

So it looks like, in order to make this work, we're going to have to have a couple people volunteer to get there early in the morning to snag a picnic spot. Even then, there will be no guarantees.