Hey, Kin-of-the-moon. When are you arriving at BWI? I'm looking at a SWA flight from OKC arriving at 2:40pm. I haven't made flight reservations yet, but I have registered for the Getaway. I, too, will need a ride from BWI on Fri and back on Mon am.
Ironically, you can fly from the west coast to BWI for $220, but it costs $348 from OKC! It will be worth it, I'm sure.