The Electric Umbrella is the only counter service that I would recommend at Epcot. However there is a nice coffee shop right beside IceStation Cool (free Coca Cola products from around the world): I just cannot remember its name.
If your meeting time is after 11am, you might wish to meet at the Morrocan pavillion, counter service there is pretty good: I personnaly think the food is a bit bland here, but the majority of people who go think the food is great. (based on many posts on Disboards).
If you just want coffee, pastry or something light: the little pastry shop in France is great place to meet.
What ever you end up doing, enjoy.
