Yes, you just need to go through the security check
Yes, they are.
Yes, definitely allowed. But you can open them only during rain delays because they block sight lines. (I'm an usher at Fenway. )
I believe they are only allowed to be used during official game delays
No
Indeed
Yes
Go to their website and check out what is and is not allowed It was raining when i went i mostly daw ponchos...
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