I believe it's first come.. we saw several open tables and grills during our visit Memorial day weekend.
Thanks for contacting us! If you are looking for a picnic shelter (covered) area, you would need to make a reservation by calling 1.888.432.2267 or visiting parkreservations.maryland.gov. We also have uncovered tables and grills that are first come, first served.
I would call the owner and ask for specific locations based on the size of the group your bringing. The camp pads can accommodate easily 4 people with the grill setup they have there.
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