We've been twice this year. Once for a long weekend (with the Olds!!) and once for a fortnight (with the brats!). We found it much cheaper to book the flight and villa/townhouse separately. We used
http://www.holidayvillas.com/ and had a villa the first time then a townhouse in a gated complex the second time. On the whole the second option proved the best as far as transport to and from disney and its close location to the main routes (and many many many steakhouses etc) Everything was within walking distance, yet once on the complex you were away from the hustle and bustle. There was a communal swimming pool for the kids plus an onsite clubhouse with snacks, pressies and internet connection. We went with NWA first time (stopover in detroit) and then virgin the second time - but you can get much cheaper flights from smaller chartered airlines.
have fun whichever way you choose!! I'm sure you will