You don't but it helps
No, but it is best to have them or you may have a long wait
No, but it's best to have a reservation to ensure you're seated and be don't have to wait for available seating.
Without reservation Thu-Sat any time after 6 you will wait FOREVER, especially if outside seating not an option because of weather.
No, they're not needed. But it is recommended especially on a weekend night. Or if you have a large group of people.
No, but this place is extremely busy.
It helps. Unless you find a spot at the bar or come there during the day you might need to wait 45 min for the table in the evening. This entire shopping and restaurant complex became very popular.
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