My DH and I followed lurkyloo's wedding - we were both planning around the same time and she helped so much.
Anyway, our ceremony was in Italy, followed by a brunch reception at Atlantic Dance Hall (that ended at 3). Our guests went back to their resorts and most either rested, swam or just hung out. We then did a Dessert Party later the same evening in UK. I feel getting married in Epcot was so special and individual and not like any other place in the world (Disney or the world).
We had 50 people, hired a motor coach for the ceremony and reception portion of the day. For the DP, we had everyone meet at the front of Epcot and everyone was escorted into our DP with a Disney guide.
I highly recommend an in park ceremony. Yes it was early, but as we had everyone bussed in we hoped to make it a little easier for our guests.