I have to agree with everyone else!! Wolfgang's is excellent!! We haven't tried Earl of Sandwich but are really looking forward to it on our next trip!!
I think I prefer WPE, simply because it has a more varied menu, EOS is good if you want a sandwich. I don't think they are any different than any other sandwich shop but tasty if that is what you're in the mood for.
Earl of Sandwich and Wolfgang Puck are two of the best counter service restaurants on property. The sandwiches at EoS are fabulous, and Puck's has a really nice variety of soups, salads, pasta and pizzas, and beef and chicken entrees.