C.S.
A.,
Last year my daughter and I went to Disney world, I used their website http://disneyworld.disney.go.com to do all the planning, paying for the plane tickets, hotel, park tickets, etc, I loved it! it was so easy.
I really enjoyed staying in a Diney resort, it make it much easier for me, because you have everything there, dining, transportation to the 4 theme parks and to downtown Disney, transportation from and to the airport and more.
Don't forget they have 4 theme parks: Magic Kingdom, Animal Kingdom, MGM Disney Studios and Epcot Center, they also water parks, but we didn't go, it was not the purpose of our trip, I really enjoy going to Epcot, but everything is very neat, we didn't get bored, my daughter was 6 at the time and I think she enjoyed every single day. We went to times to most of the parks, we stayed until the parks close to see their daily lights show, of course animal kigndom doesn't have that.
Well, I hope this helps. You will enjoy it!