Yes you can they have picnic tables there
Yes
Yes...we did both with no problems
Yes you can
You can bring an empty bottle in and fill it inside the park
I saw several people carrying around refillable water bottles, and all the food places will give free water (as long as you don't ask for the bottled water).
You cannot bring your own water and snacks inside this year, you have to buy them inside.
Soo i am not sure about this but it costs 5$ just for water bottle soo not worth to buy it but .. i highly recommend you bring cooler in yo car and once you come in you can always come back in as long you get yo picture taken at the gate and get re entry ticket.
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