We didn't have a pavilion, but from what I saw, some were reserved and some were first come first serve. There are many pavilions. I only saw one that had been reserved.
Reservable boating facilities, restroom facilities, pavilion rentals, park offices, visitor center exhibit halls in day use areas, family campsites, organized group tenting, amphitheater, cabins, unique houses, lodges, cottages, and yurts are currently OPEN. For more info, go to: https://www.dcnr.pa.gov/StateParks/FindAPark/PresqueIsleStatePark/Pages/default.aspx
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