Hello, Nanette!
A Tables in Wonderland membership is a great value for those who frequently dine at the Walt Disney World Resort. We love our membership and enjoy the 20% discount at over 100 participating restaurants. Currently, TiW membership is exclusive for Florida Residents, Disney Vacation Club Members and Annual Passholders. Members have the option to renew their membership at any Guest Relations Lobby or by calling (407) 566-5858. Keep in mind that if you choose to renew via phone, you must allow several weeks to receive your membership card by mail; so plan accordingly.
Unfortunately, Teppan Edo is not a participating restaurant at this time. However, these Epcot® restaurants are currently participating:
• Akershus Royal
Banquet Hall
• Akershus Royal 
Banquet Hall
• Biergarten Restaurant
• Coral Reef Restaurant
• Le Cellier Steakhouse
• Les Chefs de France (Lunch Only)
• Nine Dragons Restaurant
• Restaurant Marrakesh
• Rose & Crown Pub & Dining Room
• San Angel Inn Restaurante
• The Garden Grill Restaurant
• Tokyo Dining
• Tutto Italia Ristorante
• Via Napoli Ristorante e Pizzeria
For a complete and current list of participating restaurants, visit tablesinwonderland.com.
I hope this helps and thanks for visiting the Disney Parks Moms Panel! Please let us know if we can be of further assistance as you plan your magical vacation!
Missy