NYC never stop, than you can go there check it and schedule. But every time that I saw there was easy to go.
You can't reserve a table. If it's busy you can wait in line or get a drink at the bar until they call you.
I do not think you can make reservations. Get there early usually a wait.
I've visited when the wait has been nothing and plenty of tables available and when the wait has been 90 minutes. Varies on time of day, weather, season, etc.. as to whether reservations r needed.
Depends on the time and size of your group. But wouldn't hurt. We went in after midnight without any issue.
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