The folowing is courtesy of allearsnet.com:
"Is there a charge to see the Candlelight Processional?
No, it is included in your admission to Epcot. There is, however, a dinner package available for purchase that includes a ticket to Reserved Seating for the Candlelight Processional.
Seating without the dinner package is on a first come, first serve basis for each show. Folks line up 45 minutes (longer as you are closer to Christmas) before show time. 15 minutes prior to the show, seating is then opened up to those on line. Also, keep in mind if you wait in line for the 2nd or 3rd show of the night, that you will be hearing the show before yours as it is performed.
You can always stroll by the America Gardens Theatre in World Showcase to listen to the music and wonders of Christmas.
If you wish to purchase the dinner package with reserved seating, there is a charge."
Hope this helps. We saw CP several years ago...it was wonderful!