If you're definitely planning on coming post if you're planning on bringing any food for yourself or to share, and the same with bringing liquid meals for yourself or to share.
More than welcome to just come to relax, reconnect with old friends, and bring or make new friends. More than welcome to toss a frisbee around, or even bring your own fishing pole. Music will be expected. Everything is optional except not having fun, which you can make do however you need to.
And be prepared to Hike, climb, and go on the boardwalk if you want.