Yes..anything goes at this place!
Yes no glass bottles
Yes You can..
I never saw anyone actively supervising what was brought in, I believe so long as you don't litter and don't make excessive noise (some people tried setting up a DJ station while i was there and they were by far the most boisterous, the park security was on them shortly after lol) then you should be good! Actually I did see some people with group floaters and some coolers there with them.
Sure. You can bring anything
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