It's a little pricey. I spent approx $35.oo for one person when I went. I didn't have a reservation, and would think for 5 people, you wouldn't need one unless it was during a very busy time...
As other comments above stated,I would figure around $35 per person. The wait for the seating is always pretty short, except for peak dinner times. The atmosphere is nice and so are the wait staff. I've been there at least 4 or 5 times. The show from the cook is typical for a Japanese restaurant, but I have had chefs that have made it really fun for my kids. The food is good. I think it's a little pricey, but it's fun.
No reservation needed and I would guess around $120 pending what all you order and drinks and such
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