If you are traveling with a family consider utilizing the early check in at downtown disney with Virgin or the off airport check-in facility at the lake buena vista factory outlet mall for all other airlines. You can check in for both as early as 8am and once you get your bags checked in and have your boarding pass, you get an extra half day at the parks rather then standing in line at the airport with the family.
Something to consider. Of course WDW offers check in for many airlines at the resorts, but I guess this is an option for you if your airline isn’t one of the select one…you would also need transportation to do this. Most WDW guests don’t rent a car, so I don’t know if this would work for most.