If my DH and I had the money at the time of our wedding, I would have chosen an outside vendor. Our photographer wasn't personable took the most akward shots and made us stand where we were squinting into the sunlight and what realllllly peeved me about the pictures they chose. There were pictures taken of us with my family, his family, and then both families. The "wonderful" photographer was so nice to pick the photo with DHs family, not mine or the complete family. Real nice....
I'd also like to mention, with Disney's photography we did receive a CD that we weren't charged for, the pictures aren't very large, but you can print pictures off your own computer from the CD