Technically no but never seen it enforced
Plastic containers
Yes
Not sure
Yes it is.
Theres is not a problem at all. Bring your can beer or drinks in a plastic container.
There's sounds around that say that they're not allowed but I've never had a problem the times I've gone. I guess as long as you're not causing problems or disturbing anyone they'll leave you alone.
Thanks! Your answer is awaiting moderation.