We have been enjoying pizza from Mellow Mushroom in East Cobb for 15 years - our last visit was Saturday night! We sat at our table and watched a giggly group of teenage girls celebrate a birthday, and it brought back memories of our kids doing exactly the same thing. This is a family restaurant where you'll see moms and dads with kids, groups of teens, sports teams, etc. All are welcome, and all are very well behaved.
I agree with the reviewer that said they get both the pizza and beer right! The wait staff at East Cobb is great, and we have seen them grow up, graduate from college, and move on to professional jobs in the years that we have been going there.
If you go, tell them, "Toppings all the way to the edge" sent you. They'll know.