As a WDW vet, here is my take on it. When I go to WDW for a week, I never leave the property. WDW takes me to the resort from the airport on Magical Express; buses, boats and monorails me around while I am there; and then returns me to the airport. I am completely immersed. I never see anything in Florida other than WDW. There is just too much to do there, and it is too spread out. We never have time for anything else and we never even rent a car. If you have never been to DL before, you will be absolutely shocked at how close together everything is there. We can go to DL for 2-3 days, still get our Disney fix, yet also have time to explore other things in Southern California.