I cannot even imagine any WDW park as being JUST for kids. I am 50 years old, and I don't have any kids at all, yet I take my annual December trip SOLO . Yes...Buzz Lightyear is totally delightful for adults. Splash Mountain, Thunder Mountain, Space Mountain, Carousel of Progress, are all wonderful, just to name a few. Sometimes I get a bit upset with people who just assume that the Magic Kingdom is just for kids.
Oh My Gosh.......If only people really knew.......there's so much for adults to do........and there's barely enough time to do it all.
Oh ! And the Haunted Mansion is terrific, too. I could go on and on......
Have a great time !