marathonmommy...We usually fly out of Philly on Southwest though we have used Spirit out of Atlantic City. I wouldn't panic right now. I think that Southwest will offer internet specials of either $49 or $79. We are flying down to WDW next week (Jan. 3-13) and I originally booked our flights in September for $79 each way. In November, Southwest offered internet specials of $49 for that time period. It was not offered on my flight down, but I was able to re-book my flight back at the $49 rate and got a $30 credit on each of our tickets. We will be going back to WDW in mid-May (DD's graduation gift) but I won't book my flights at the current rates. I am hoping that the rates will go down sometime in January or February.
As for DME, the last time I flew down on SWA they did not participate, however you can still use the service. The only difference was that we had to pick up our bags at baggage claim and transport them to the bus. On the return trip, we were not able to check-in at the hotel but had to bring our bags out to the bus and then transport them from the bus dropoff up to the check-in counter. You can call DME and ask if SWA is now participating.
BTW...noticed your BWV tag. Are you DVC members there? BWV is our home resort and we became members in 1996. We will be there next week and again in May.