What to skip depends on the rider. Most of Disney is designed to appeal to everyone & unfortunately, this means that most of the attractions are dulled-down and passive. We are thrill riders. My 8yr old son was underwhelmed with Disney World in general. Even the best of the roller coasters were too tame for him, so he was REALLY bored with:
MK:
Pooh, Peter Pan, Snow White, Small World (we knew that going in), the race cars, Aladdin, and the Jungle Cruise (this was pathetic!)
Pirates of the Carribean, Country Bear Jamboree & Carousel of Progress were things I remembered fondly from my childhood trip....they have not stood the test of time and are seriously outdated. Even Chuck E Cheese's antiquated animatrons seem fresher.
He did like (but wanted more thrill from): Space Mountain, Big Thunder Mountain RR, Splash Mountain, Buzz Lightyear,and he did like Tom Sawter's Island... (this was neat, but not worth waiting for if there is a line because you have to wait for the raft to take you each way.)
Mickey's Philharmagic was the best of the 3D attractions in any of the parks, but again, they all need updating to keep up with Busch Gardens & other parks.
Epcot
(many attractions were closed when we went last week, so this isn't complete)
Most of Future World was unimpressive. Soarin was just ok. Mission Space didn't make any of us sick & my DH avoids anything that spins because he gets sick. We rode both versions. It was neat, but it seems like they could have done so much more with it. Test track was cool. The Seas with Nemo was dull, but Turtle Talk with Crush was well done.
The biggest waste of time was Journey into Imagination...this was like a bad carnival ride that just didn't make sense. Even more laughable was "Figment's Place" This tiny building had two small carnival mirrors. That's it. I guess the Figment charcter can be found there too, but I cannot believe they waste the time airconditioning the building just for that.
My son LOVED the world showcase -go figure!
Animal Kingdom
We liked everything here. Even so, Expedition Everest was too tame for my son. (his exact words were "is that it?!") AK is best if you take the time to talk to the guides and not rush through.
MGM
There are really only two rides worth bothering with here: Rock n Roller Coaster (very well done, could be scarier), and Tower of Terror. The stunt show was good too & so was Indiana Jones (skip it if you've seen it before though)
The back lot tour was long and dull. So was the great movie ride.
Water Parks
These are decent water parks, but not worth going to if it is even slightly crowded. Wait for an evening EMH or go after a storm.
Overall, I think my son was too old for Disney & Disney just didn't offer enough "magic" to justify the prices or lines. Too many of their attractions are dated & common. We have been to Hershey Park, Six Flags, and Busch Gardens in the past 2 years & quite honestly, Disney didn't offer anything that made it stand out as the leader in entertainment or service. (Six Flags would be the exception on the service -everyone is better than them on this)
The Alpengeist (sp) roller coaster in BG was so incredible that I told my DH as we did the child swap that "this ride alone was worth the price of admission!" I can honestly say that nothing in DW came close to earning that kind of enthusiasm. The other parks have better 3d attractions, are just as clean, and the thrill rides blow Disney out of the water.
Disney really needs to freshen up attractions or get rid of their outdated attractions or they aren't going to be able to justify their outrageous prices beyond the toddler years. We had a good time, but we could have had just as good a time at any other park for much less money.
With the exception of the piano player at the POR bar, most of the entertainment was so-so. The POR piano player Bob Jackson, however, was fantastic!