As they mentioned above, you can easily walk from EPCOT to Beaches N Cream. From the exit at International Gateway it is no more than 5-8 minutes on a leisurely stroll.
My family did it last month, having come from Boardwalk where we were staying. If you do not know where you are going, Beaches and Cream can be a little bit difficult to find. It is actually "outside" right behind the pool at Beach Club. It does not really stand out that much, so just give yourself a few minutes extra to locate it! There is a hostess stand out front too, which helped when we finally got pointed in the right direction.
For the record: it is an awesome place! You will love it!