I am personally not a big fan of roller coasters (okay, that was like the understatement of the year.), and I haven't been on Space Mountain for YEARS. I think I was six the last time I rode it. Anyways, I LOVE Big Thunder Mountain (My mom forced me to go on it) and Splash Mountain (Again, my mom forced me) As for the other rides, Peter Pan, Aladin, Snow White, Pooh, and the other rides like this arn't worth the wait, unless you have people who want to ride it, the line is SUPER short (and I mean SUPER. I have a sister who wanted to ride it SO bad that she made me stand in an HOUR long line just for about 30 seconds. Man that stank), OR if you want the air conditioning. The rides (as I remember) are air conditioned: a sweet relief.
I HATE Tower Of Terror. (Yes, my mom forced me to go on it) It is a good ride if you LIKE rides like that, but I have no intentions of going on it again. I'll just wait in the Giftstore and look at all the cool scenery. (It's really awesome.) I have not (and WILL NOT) go on Rock and Roller Coster. If I can't even go on Space Mountain, well...) There is, however, a GREAT ice cream store by the two thrill rides. There are also alot of shows, which are okay. As far as Fantasmic goes, it is NOT worth the wait, for us, but you may like it.
Oh Epcot. The World Showcase is GREAT, but also really tiring. Make sure you have alot of water. I have not yet gone on Mission: Space ( I get REALLY sea sick, and I don't know weather or not to go on it) Test Track is BRILLIANT. Make sure you go on it in the am and when it is dark. It is a cool experiance both ways.
I haven't been in Animal Kingdom in Billions of years, so I can't help you.