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There is something for everyone. Pick the park based on what you like best. Here is my quick review of each park.
Magic Kingdom= It's the fantasy of your childhood. Princesses, pretty mild rides the classic disney. I loved it.
MGM= Old style Hollywood. Great stunt shows eat at 50's drive in theater or Prime time cafe.
Animal Kingdom= zoo like environment with rides some really great.
Epcot= You can spend time learning about science related stuff then "go around the world" in the world showcase. The people who work at each "country" are actually from the country represented.
Hope this helps have a wonderful trip. I would stay in just one park it is too stressful to move around for just one day.I would pick Epcot or MGM if I was alone. Go to tripadvisor.com they give lots of details. AND HAVE FUN LUCKY!!!