Not for 5 year olds... 12+
Nothing unfriendly for kids but it is a fine dining experience. If your kids can stay quiet for two hours and not disrupt the other diners, it should be fine.
I would only suggest that you call them. My experience was in the context of a vendor taking me out to dinner to talk business and it was during a convention at the conference center. There were no children there, but could you, I suppose.
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