No worries. If somebody is already there, you arm wrestle for it. 2 out of 3, winner gets all the birthday presents from both parties. Everybody knows it. Just find the biggest person in the other party and challenge them as soon as you arrive.
I don't think you do. Honestly, I didn't see anyone patrolling the park. Otherwise, it's more of fiest come first serve. I would just say put signs on the tables so no one takes them.
I don't see that park listed in reservation system, you could always call. https://web1.vermontsystems.com/wbwsc/flhillsboroughwt.wsc/search.html?display=detail&module=FR&Class=shltr
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