The gates referred to are to the parking lots but you can skate/walk in. I've not taken notice whether there the skate park has ample lighting or not, though.
Yes, no fence or gate to lock. But no camping.
I wouldn't recommend it...potential for rough ppl but yes you can
I would not recommend going there that late.
Most parks in the city close at 11
The fence does get locked after 9 pm
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