All the buffets will have what is called a "kids' buffet" which is generally one section of the buffet where you'll find "comfort foods" such as chicken nuggets and macaroni and cheese. But, the one section is not limited to just kids eating there. And kids are not limited to that one section.
I'm not quite sure why there is a special designation of "kids' buffet". Probably so parents can easily find the selections their kids are used to. Personally, I don't even tell my grandkids anything about the buffet before we go. I just let them find things they want to eat.