If you are a hotel guest, you can. However it is a bar/restaurant first, so you will need to order something if you are not.
You would need to order something. The establishment is technically a rooftop bar, so they require you to order food or drink in order to take up a seating place.
Probably not. There is a host that seats you on the roof or directs you to open seating. But the entire roof is technically table service
Thanks! Your answer is awaiting moderation.