GT Fish & Oyster,
531 N. Wells St.
Who eats: The River North restaurant caters to businesspeople, couples and hard-core foodies.
Why eat: Since it opened in the spring, it has created quite a buzz, making seats scarce at dinner time. The relatively new lunch service, which started in June, is more accommodating. On a recent Friday, some tables were available without a reservation.
Ambience: The restaurant is divided into two rooms with slightly different feels. The front room includes a bar, tile floor and slightly louder music. The back has a more homey feel, with hardwood floor, black wooden tables (padded underneath) and white walls...