I dont know about unopened bottle water but I did bring 2 of my own see through sports bottle containing energy drink mix and no one said anything upon my entry. This was about 3 weeks ago. I hope this answers your question.
According to their website... Guests are allowed to bring sealed clear bottled water (20 oz), any type of flavored water is not allowed, into the Field.
To the best of my knowledge- no
Un opened yes.
No they want the bottles to be factory sealed.
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