If you want to experience Epcot (we visited eight times in seven years) without wasting a lot of your time waiting in long lines at every attraction you may want to try the following tip:
Obviously, you should arrive at the staging area early so you will be among the first to enter when it opens, but, more importantly, do not be tempted to visit the first exhibits and attractions you come to just inside the gates (like Spaceship Earth). Instead, pass on through Future World and go immediately to the World Showcase. You can start on either side and visit each of the national pavillions you encounter. You won't have to compete with crowds to view the spectacular video presentations like "Oh, Canada!", shop in any of the specalized gift shops or dine in any of the national restaurants because most of the attendees are back in Future World.
Best of all, by the time you complete your journey around the World Showcase Lagoon, you can return to the impressive attractions of Future World and walk right in because the crowds have now moved out to the World Showcase.
You will still get to see it all, but you will spend very little time waiting in any lines and you will have a much more enjoyable experience. It has worked for us seven times in a row! This technique can also be used at the Majic Kingdom and other theme parks. Enjoy Epcot and Disney World!!