Honestly, I've been going to Walt Disney World all my life and I've never gotten tired of anything. I'm 16 now and we are going back in month, but from when I was a kid to now, I still like some of the things. Chef Mickey's Character Breakfast is one of the best experiences I have to this day. Great entertainment and amazing food. If you're staying at Port Orleans Riverside then I recommend taking a night, I'm not sure when he comes on, but go see Bob Jackson. He is the lounge entertainer that everybody loves. For parks, it's basically what others have been talking about. You're going to get different experiences everywhere, but you can possibly take a family friendly tour if you're into that. Go behind the scenes and check out what goes on. Also, if you both are into sports then I would check out the schedule for Wide World of Sports. Our family loves watching baseball, so we get tickets for spring training.
Have fun, and good luck!
~Jon