If everyone in your family likes Italian food, Bucca di Peppo Italian at the Excalibur is a perfect choice because all of the dishes are served "family style." Bucca di Peppo is open Sunday-Wednesday from 10:30 a.m. until midnight and Thursday-Saturday from 10:30 a.m. to 2 a.m.
Pizza can be ordered in either a small size (serving 2) or a large size (serving 4). Prices vary depending on the ingredients, but range from $16.99 to $20.99 for the small pizza and from $24.99 to $28.99 for the large pizza.
Entrees, pasta, and desserts are also available in either small (serves 2 or more) or large (serves 4 or more) portions. Knowing that the restaurant's definition of a serving is probably a lot bigger than what your kids would find enough, we suggest you scale down. A small order will certainly be plenty for three and will probably be sufficient for four.
Also, this restaurant can get rather pricey if you order the large sizes. While the pasta plates are reasonably priced, a dinner entrée for four will cost in the neighborhood of $40.