You definitely want to have priority seating reservations. It took us 2 days to get in but was really worth it. The experience alone was wonderful. You are seated in an old-fashioned '50s home and your server is supposed to be a member of your family--they treat you like one, too. Our server was Uncle Dale, who was great. He has his own schpiel on how to act at the table, including no elbows on it. It was fun, and my 5-year-old loved it. They make sure you eat all your veggies or they let everyone in the place know that you're wasting food. The service was outstanding and delightful.
The food is home-style cooking, from meatloaf, roast beef, and veggies to fried chicken. It was excellent. My son got mac and cheese and could tell it was freshly made, definitely not out of the box. He said it was great. To end it all, we had dessert, which was enormous, so we all shared it. It was exciting and we will make sure we make reservations each time we visit MGM. It is a must-see.