Phors, you don't need any clothes. Just they other things, stuff to keep you busy. NO need for snacks really, SW will feed you, plus you have a good hour and a half in BWI to go eat..if you can.
I will have Merle check you in Phors. You can go on tonight when you get home and do the check in again and print the boarding pass out. Her checking you in though at noonish, will hold your space in line at least.
OK, here is the big thing Phors. Your luggage will come off in BWI, so you are going to have to go get it and then go recheck in there for the BWI/MCO leg. Go get the luggage, then take it upstairs to the Departing flights and GO OUTSIDE and do curbside check in. SO much faster.
The SW rep did tell me to tell you to ask at the counter tomorrow if you can get your luggage on flight 2009, which would take it right to Orlando from Manchester and it will then be waiting for you when you get there. She said they might do that for you, JUST ASK! If they say no, then you just have to go get it, then recheck it. Won't be a big deal and Merle would actually be there at that same time and walk you through it once you get back up to Departing Flights.