There used to be a restaurant in the south Myrtle Beach area that had exactly what the OP is discussing. It was a fairly nice seafood place called the Ghost Ship. There was a room that was dedicated to families with young children. In the middle there was a huge closed in area with the wall about two feet high filled with climb on and other toys for kids. I think it was for like ages 1-6. All the tables were situated around the outside of the square. You could littarly reach over and touch your child if he stayed near your table and easily see him everywhere he moved. Not quite Dinning by any means and we only did it once and opted out after that but it did offer a great choice for some parents.