Just had a look at a park map from 1992 (our first trip to WDW). At Communicore East there was Stargate Restaurant - <i>Breakfast omelettes; lunch and dinner menus feature lean beef burgers, chicken breast sandwiches and salads. Hosted by Coca-Cola</i> (forerunner to the Electric Umbrella?). At Communicore West was Sunrise Terrace Restaurant - <i>Pizza, lasagna, pastas and anti-pasto salad. Hosted by Coca-Cola</i>.
At that time, it seems the Odyssey Restaurant was only open for lunch - <i>Character shows daily. Lean beef burgers, hot dogs, salads, chicken sandwiches.</i>
The Garden Grill was then known as the Land Grille Room. China had the Lotus Blossom Cafe.