My guess is that Tonic does not necessarily target our demographic--adults with kids dining out for dinner. However, for us it Tonic was a great find. We went here on a Thursday night for dinner for the first time. The food was excellent and very reasonably priced. Excellent sandwiches and appetizers. While their beer selection wasn't large it was an interesting selection of bottled and tap beer, and we found choices that we were very pleased with. The wait staff was friendly and attentive. The music was a bit loud for someone just wanting to go out to dinner. Our 8 year old found plenty of food to choose from, and since she likes music, she enjoyed herself.
Overall, was a very good place for a dinner, would recommend bringing older children for dinner (no booster seats available).