We didn't go to DHS (I still call it MGM) at all. So I missed a lot of my favorites, like Fantasmic, and Toy Story, and Star Tours.
We also didn't do any character meals at all. I wish we had visited Innoventions at Epcot, and taken more character photos. We also did not ride Test Track. Although the day we went to Epcot, it rained so we also did not stay for Illuminations. I never got to see the Magic Kingdom castle at night and missed Wishes.
I had a lot of fun, despite all the things that were missing. Just gives me extra incentive to go back, and go back really soon.
I hope you liked Pop Century, Hayley. I stayed there in 2009, and I really enjoyed the fun atmosphere. I stayed in a hotel right near Pop Century name Bonnet Creek.
I, too wanted to ride in the Character Balloon at Downtown Disney, but we kept getting lost, in our rental car, and never made it to Downtown Disney at all.