I would ask to be moved. I have before, for lesser reasons.
I want to enjoy my meal whether at an expensive restaurant or a cheap buffet place. If I wanted to deal with bouncing, chanting wild monkeys I would go to McD's or Chucky Cheese.
And if I could not be relocated I would ask the management to address the parents about this kind of behavior, immediately if not sooner!
Facebook and other review sites carry a lot of weight these days and if this was not taken care of I would be on there posting the lack of management skills for all the world to see.