We went to Orlando last March with our 4 kids, then 10, 9, 6, and 2. We went to 3 of the 4 Disney theme parks, Magic Kingdom, Animal Kingdom, and Hollywood Studios. We also went to Seaworld twice and Universal Studios twice (2 parks).
I have to say that Animal Kingdom was my favorite. It had the perfect amount of attractions/rides. You could hit them all before the park closed if you got there early enough. The crowds weren't too bad at all. Just make sure you use your easy pass (or whatever they call it, different parks call it different things). There are only a few things that required waiting really.
Magic Kingdom was HORRIBLE!!!! I hated it! It was too crowded and the lines were too long. There was like a 1-2 hour wait for everything. We barely got to do anything. How in the world can you have 4 young kids wait in line for every line that long???? Not worth it!!! Sure it is neat, I just wish they didn't allow so many people in. I guess I shouldn't have went on a MONDAY! LOL!
Anyway, enough rambling. LOL! I'd say it would be worth your money.
Pictures are memories too. So take lots!
Good Luck!