Availability: I don't expect to be unavailable
Meeting place:
I looked a little more into the park situation, and it looks like an entrance fee is required to get into Hopatcong. Luckily there are several more parks nearby, of which I'd consider using two: Stephens State Park, and Schooley's Mountain County Park.
Stephens State Park
Schooley's Mountain County Park
I would chance it for getting a pavilion to use in case of rain (just show up and hope no one is using it), but that's just me - they can be reserved. Those two parks are close enough from each other (~8mi) that we could go to the other if one were occupied.
Although it is farther from the highway, I am leaning toward Schooley's because it looks like a more interesting, more "naturely" park. Though when push comes to shove, it's still in the middle of New Jersey.
