But if the roast is part of a bigger spread with plenty of other food, you can plan on 1/2 to 3/4 pound of prime rib per person. Have your butcher order a roast in the weight range you need.
Special order the rib roast from a local butcher, asking for one with nice marbling and an even fat cap. What's the difference between prime rib and rib eye roast? Both prime rib and rib eye ...