Slightly off-topic - I bought our flights for end of January as soon as SW opened the booking window. I bought a round trip itinerary instead of two one-ways. Our flight to MCO is now sold out, but I keep checking to see if our flight home drops in price.
But if it does drop in price, would I even be able to capture the savings on only one leg of the trip if the flight down is no longer available? It doesn't make sense to keep looking to save a couple bucks on the flights home if I would need to cancel our flights out to get them.