Epcot, quite simply, is one of the best theme parks in the world...hands down. Epcot consists of two distinct parts, Future World and World Showcase.
The World Showcase does just that, showcasing the culture of 11 countries at individual pavilions capped off with a great fireworks/light/musical-score extravaganza. Hint: At the Food and Wine Festival in October even more countries are represented and you can purchase bite-size food portions (and beer/wine) from each country.
Future World encompasses the front of the park, providing unique, family-friendly attractions highlighting technology and innovation, along with our planet's past, present, and future.
Epcot is one of the biggest theme parks in the world, so a full open-to-close day is strongly recommended.
The attractions are "for all ages", and it's rare you'll find someone that doesn't enjoy Epcot even just a little bit, but if you're looking for high thrills or a fast-paced park, Epcot won't be for you.
But for the rest of us, it's a slice of heaven in the form of the ultimate Disney vacation!