Hi, Paulette! You must be getting very excited for your upcoming trip!
Everything Pop at Disney's Pop Century Resort is a quick service location, so no reservations are necessary. To get to Pop Century, you can catch a bus near the front gates of Epcot that will take you to that resort. To drive there, head toward Hollywood Studios and you can park right at the resort.
Before you spend the travel time going to Pop Century, you might want to go to
www.allears.net and look up the menu at Everything Pop. It has a nice selection, but it is mostly pizza, burgers, chicken fingers, sandwiches, and soups. It is a great option if you are staying at Pop Century, but you might not want to take a few hours of your "magic" time to visit here.
Another option you might enjoy would be to exit Epcot at the International Gateway (in World Showcase) which leads to the Boardwalk area. Here you will find the Boardwalk Resort, and the Yacht and Beach Clubs. There are many restaurants here to pick from that are a bit more unique and will save you the travel time to Pop Century. Some suggestions: Beaches and Cream at the Beach Club, ESPN Club, Big River Grille & Brewing Works, or the Captain's Grille at Yacht Club.
I do not want to discourage your plans, I just want you to make the most of your vacation! Good Luck!