I agree with mickey0216 that the boats run ever day of the year unless there is bad weather.
Let me also add that if you exit Epcot at the International Gateway (near United Kingdom and France) you can take the Friendship boats from there to the Yacht/Beach clubs, the Boardwalk, Swan/Dolphin and then to the Disney Studios. You can also walk this route in maybe 20-30 minutes. It is a nice walk in a really great area. If you are not in a hurry try the boats.
Thought you might want to know this for your planning.