In my opinion, I'd go to Earl of Sandwich instead of a table service. The food there is absolutely great. I have yet to find any TS at DTD (and we always have a dining plan) that is worth it. We would never recommend Raglan Road as they have very poor management and terrible hostesses. This is the one restaurant anywhere (at WDW or home) I would never return to because the service was so poor.
In terms of children at the restaurant, I would also steer clear of it. This is an Irish pub, not a family restaurant. While they do have a kids' menu, please keep in mind that this restaurant caters towards the adult crowd. It can get quite rowdy in there especially during the bands' performances.
Looking at the ages of your children, you are probably better off with one of the themed Landry's restaurants like T-Rex or Rainforest Cafe. The food is decent there, but not the best IMHO. I think it is good for a family dinner though.