Disney is so big that you can be at each park the entire day and not see all of it, particularly if it is during the heavy tourist season. Disney has tried to eleviate the long wait in lines by offering Fast Passes, which allow visitors to ride a ride between a specified amount of time and with virtually no waiting.
The great thing about Silver Lakes location right next door to Disney is that it is easy come back to the resort during the hot part of the day, relax in the pool or take a nap, and go back to Disney when it begins to cool down. Be sure to buy the multi-day passes, some will include the water parks, sports complex and the like.
Though it was great fun, I can honestly say the first time I went to Disney, a few years ago, I was a little disappointed. Growing up in the 60's watching Walt Disney World I expected "just short of heaven" type stuff! On our second trip my expectations weren't as high, which allowed me to see the wonder of it all.