I've seen birthday parties with moon bounces over by the pavilion, which has about 8 tables under it with two grills to the side of it. If anything like others, you may just need a permit. Check there website
Not sure about that, before covid people would grill out there and have big picnics and stuff by the skatepark where I go all the time
I do not think they will do any large gathering in the park.
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