Well, DH and are aren't Christians - and we love the Candlelight Processional and all the other Christmas festivities at Disney World. For what it's worth, I was raised Baptist (although we didn't attend much) and he was raised Jehovah's Witness. Now, we're both what you would call agnostic. We really don't believe we know the truth about a whether or not there is a higher power - and we don't believe anybody else does either.
Having said that, we do celebrate Chrismtas - not as the birth of Jesus, but as a special time for family, and giving, and traditions, and memories, winter fun, etc. We always have a Christmas tree, make cookies, give presents, and all of that. Most of our families and some of our friends celebrate the religious aspects, and that doesn't stop of from enjoying the holidays together.
Anyway, as I said, we love the CP. Why? First of all, it's a wonderful concert just from a musical standpoint! We enjoy the performance. It's very well done and we love live music. I especially enjoy choral music sung by a large group. Second, we do still love and enjoy the Christmas songs and stories because they are a part of our family traditions and childhood - at least mine. We may not believe in the truth of the message, but that doesn't make the songs and story any less enjoyable. Third, I think it's interesting from a historical standpoint. I do believe that Jesus was a real man and a great teacher and preacher, so I enjoy the stories about his life. I also love those "historical Jesus" shows on the Discovery Channel.
We definately enjoy all the other Christmassy things at Disney World - Mickey's Christmas Party, the tree lighting ceremonies, the World Showcase Santas, the Osborne Lights, the sleigh ride at the Wilderness Lodge, all the decorations, etc. If you check my signature, you will see we've been many times in December, and we're going back this year! So obviously, this non-Chritian isn't offended in the least.
Honestly, though, other than the CP, I haven't ever noticed any religous Christmas decorations or anything at Disney. It's mostly trees and Santas and stockings and snowmen and dancing gingerbread cookies and all that sort of stuff - which is right up our alley. I'm sure there are some other religous things (maybe some religious Christmas songs played somewhere or something?), but I've never noticed them.