Obviously, there's a lot of variables that will factor in to the decision. What time is the flight, how many days is the trip (did we already hit each park?), do we have another day on our park tickets, etc?
With an evening flight, we'd most likely sleep as late as possible, have a bite for breakfast, checkout and leave the luggage with bell services. Usually then, we would probably head to Disney Springs for a few hours. However, when we there a couple of weeks ago on a bit of a spontaneous trip (booked only two weeks beforehand) and with a 7:45pm flight, instead of Disney Springs we decided to resort hop by MK and check out the gingerbread houses & Christmas trees at Grand Floridian, Contemporary and Wilderness Lodge. Then, headed back to our resort (All Star Sports - never again, but I digress). We sat out by the pool for an hour (it was almost 80 degrees) until it was time to uber to MCO.