It's pretty good if you like seafood. My family typically has dinner there once every couple trips, especially if we're staying in the Epcot resort area. It's convenient, and it's usually not too difficult to secure a reservation, even on short notice.
The food isn't incredible, but it's not bad either. I love mussels and clams, so I am pretty choosy about my shellfish. The fare at Cape May definitely satisfies that craving.
It also has an extensive dessert bar with individual chocolate lava cakes served by a chef.
Hope this helps!