Hi,
there is a new bone fish grill at the corner of Central florida parkway that you could easily walk to. Other than that you would want to take the trolly that is outside the resort. The trolly will get you to a whole bunch of shopping and restaurants along International Blvd.
My guess it that if you are going to the parks you will find anything other than a car difficult or expensive. The nice thing about a taxi to the parks though is that you don't have the parking fee.