It takes 7 days to see Orlando based on my experience and yes I live here. Regardless of your interest in the city you can see it in 7 days. If you come to visit the parks count on 2 days for Universal (including Volcano Bay). Then a few days for Disney, 3/4 of a day for Seaworld. Icon Park and International Drive can fill the rest of your week.
If you are coming to learn the area to potentially move here reach out to us. I am a local realtor and very few people have the knowledge that I have about Orlando's real estate and areas. If you are researching then here are the best areas in Greater Orlando. Windermere, Winter Garden, Horizon West, Lake Nona, Baldwin Park, Winter Park and Dr Phillips. Thank you for allowing me to answer the question, How many days do you need to see Orlando Florida.