It's a relatively high-end chain from the same company that owns Olive Garden and Bahama Breeze. Don't let that scare you off, tho, very good. The "52" reflects the fact they change the menu every week to offer fresh ingredients. Every dish on the menu is under a set number of calories--I want to say 600.
It is decidedly not kid-friendly--they don't offer a kids menu or have highchairs in the restaurant. Not saying children are banned, but the implication is pretty clear.