[shilala]

It's best to have a car.
There are so many things to do away from Disney, like the beach, restaurants, Universal Studios, ball parks, Sea World, Discovery Cove (the coolest place on earth) the list goes on forever.
When you're in the park just use the buses. They're awesome.

My kids aren't very theme-parky. They like a condo and a pool and a jacuzzi and the beach a lot more than Disney, so a car is a must.
By not staying at Disney we save a fortune, too. Way more than enough to pay for the car and anything else we want to do.