We are driving but my parents are flying SW and according to the Unofficial Guide SW is not a participating airline this year. When they flew SW in 2004 they used it and loved it.
Not being a participating airline only means that you can't do the check-in at the resort for your trip home. It has nothing to do with the pick up and delivery of your bags on the way to Disney.
Perhaps you can call Southwest directly and ask?
. I will do the morning ritual checking in, but I am completely bummed that nothing has come out. I read that codes have not typically been released over the weekends, but anything can happpen right? Still thinking positive!
So is there a chance for a code on the weekend or do we need to wait until Monday?
Here's hoping for something to come out this weekend!

Why doesn't the code fairy love me? I've been good, honest!