Like all Disney restaurants the dress code (except V&A) is Theme Park casual. The only thing not allowed is Water Park attire and even then they would probably be okay if you threw on shoes and a t-shirt.
As for food, I have never eaten there and the guide books then to give it lower than average ratings. That said, I have seen more positive than negative reviews in my years on the Dis. I would say, if it is a convenient option for you, then give it a try.