I will be taking our kids in April on there first ever trip to DL. THe ages will be 12, 10, 6, and 4 can anyone tell me what rides we can all go on together and enjoy. My sister and mother in law will be with us as well. They told me they would take the 4 year old so we can do splash together. Do you think my 6 year old can handle the ride?

I think that depends on your 6 year old. Your 4 year old may even like Splash (if he/she is tall enough--40"). My 3.5 year old really wants to go on Splash this time now that she is tall enough. I think she will like it. Last year (she just turned 3) she liked POTC, tea cups, Dumbo, IASW, Jungle Cruise, etc. She even did the haunted mansion without a problem, although it did have the x-mas overlay so it probabl wasn't as scary. The only thing she didn't really like on that was the ghost in our doom buggy. The Roger Rabbit coaster was fun for her too, but I'm not sure your older ones would care for it. Soarin' might be good too (again, if your 4 year old is tall enough and wouldn't mind "flying"). And the Monster Inc ride is fun too.

HTH,
bug

Some rides you can do as a family all in one car, or at least close, are
Small World
the Railroad
the Monorail
Pirates
Jungle Cruise
Casey Jr
Storybook
Tiki Room (not a ride, but a short fun show)
Pooh
Nemo
Autopia (in different cars but you can be to each other if you go slow)

DCA:
Monsters
most of Bug's Land
Soarin
Grizzly River Rapids

I am sure there are more, but that's off the top of my head for rides that load a lot of people in one car/boat/flying vehicle

My daughter was just over 3 when we went last year and barely made the 40 inch mark: she loved Splash! went on it 10 times in a row!! My Hubby sat in the very back with her to hold onto her on my request, but only the first 2 times.