DH & I rode Cat in the Hat before we had kids. We were not the only adults to ride without kids. When we went back this summer with our little guys, we saw plenty of grownups without kids on it... as well as lots of teens. You will definitely not be alone.
The High in the Sky Trolley is very cute and offers some great views of the park. It is a short ride, however, so have your camera ready.
One Fish, Two Fish is entertaining and worth a spin... especially for those of us that refuse to wait in the mammoth line for Dumbo at MK anymore. I found that if you stay up high, you miss most of the water squirts. Even if you get hit with a spray, it isn't much. Just a fun little, "Oh, they got me!"
I also enjoyed the Caro-Seuss-el. DS5 had a hard time choosing which Seuss creature he wanted to ride on. If you have read many Seuss books, you will recognize lots of the critters on the carosel. They even have the tiny bird-elephant that hatched in Horton Hatches the Egg. If I wouldn't have felt like I was crushing the poor thing, I would have chosen to ride it.
There are some wonderful stores if you are into shopping at the parks. There is a great children's book store (of course), but I also liked the Mulberry Street Store because of all the Grinch stuff (I got a fabulous Christmas ornament).
More than anything, I like that they captured the feel of the illustrations in all of the Seuss books. When I walk through that section, I really get the sensation that I have stepped into the pages of my childhood.
