Yep they have charcoal cookers. Bring your charcoal.

"Picnicking: The accessible Quaker Race Day Use Area is on the west side of the lake and the Conewago Day Use Area is on the east side of the lake. Picnic tables, charcoal grills, convenient parking lots, drinking water, modern restrooms and horseshoe pits are throughout the areas. The Quaker Race area has a volleyball court. The Conewago area has a softball field. Four accessible picnic pavilions may be reserved up to 11 months in advance for a fee. Unreserved picnic pavilions are free on a first-come, first-served basis."

The disc golf is at the Conewago day area. Looks like we should meet in that area.