How soon before you leave. The reason I ask is that on May 18th or so we will be opening a new terminal extension at BWI. If you leave before May 18, then take upper deck(departures) and after driving about 300 yards, SWA will be the second stop(i think delta is stop 1). As you unload from your car you will see several small counters with gentlemen tagging bags on the curb(outside). Thats them.
If you leave after May 18, as soon as you get on the upper deck, the first stop is all SWA. We have the whole A terminal. Im not sure how they will set up curbside checkin yet, but imagine it will be right out on the curb as it presently is. Dont sweat it. Taking care of you and your bags on SWA should be the least of your worrys! If at any time your not sure where or what to do, ask any SWA employee for help. Its kind of like WDW. Even though I work as a mechanic, I have many times helped passengers that needed a hand. Giving instructions, helping with bags or strollers, directing people towards counters or gates, etc. Its my job to make sure you have a great experience with us and come back again.
You will not hear, "its not my job" from us. If I cant help you I will find someone who can! Happy travels!