I don't think you need one, but it may not be a bad idea if you're bringing a large party.
From their website: "Nori Nori only holds reservations for parties of 7 or more." But like others say, I can't imagine needing a reservation due to their huge dining area!
Perhaps, but I've never made one. Their dining area is very large and they can accommodate many people.
Thanks! Your answer is awaiting moderation.