I love 50'sPT and would never compare the food here to a "school cafeteria." Sure, it's definitely not gourmet food, but definitely just like good, home cooking.
I've had the Pot Roast twice and loved it both times. DW likes the meatloaf too, but thought the roast was better.
And I second the vote for the PB&J shake. Best milkshake I have ever had. DELICIOUS!!!