Yes but if it is reserved you will have to give up the spot
Yes you can. Anyone can show up and use the park and facilities any time. But if you don't have a reservation then you may have to give up the area to someone who does. Sandy city hall is where you would reserve any park areas. And it is pretty cheap i believe..
Yes and no. If an area us not in use noone will stop you from using it. However, it might be reserved in the next hour. So you might have to move early.
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