i think once a week shabbos, a family may and should sacrifice themselves to have their family sitting together at the table and eating and singing and enjoying the togetherness, it’s beautiful. why should they leave the table to go play/fight? every kid likes family time, and shabbos is the time a child could and should get it.if not then, then when?
good luck to everyone out there trying to entertain their family on shabbos, if you make it fun, it will be fun, for them for sure. it’s easy to pleese the “little ones”.