Yes. I've used mine there, but as others have said, the walkway is narrow so don't plan any elaborate set up. If you have a monopod, that would work ideally, as you can also incorporate the railing into steadying your camera as well.
You can bring a tripod but you cannot obstruct the walkways. They may ask you to put it away if it is particularly busy. But for a few quick shots it should be fine.
I don't see why not
I think it would be ok. The walkway around the outside is no very wide.
If you can't find the information on their website you can call them to ask
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