Not so good
Atlas Bar & Grille has a kids menu so we went there one night - but there is no reservation service and so it is first come-first serve and thus, you generally have to wait a half hour. However, the kids cannot be in the casino nor may they hang in the bar area of the Grille, as there are slots at the bar. There are 5 seats on a bench where they may sit but if there is a party ahead of you, you must put the children in your pocket, since there is no where else they may wait. (The buzzer distance does not allow you to wait outside the casino.)
The food was not great given the prices and the service was not good at all. I do not think it is the service so much as the kitchen. We noticed that no one had food in the dining room for a good 45 minutes after we sat down, which was at 7:30, so it is not like they were just heating everything up.