Well, I don't have it printed out...........but that's what I now do on every flight--I go up to the GA, ask them if they remind fliers that boarding is in numerical order. I usually get a funny (bad taste in the mouth sorta) look, but they mostly say that they do. I then reinforce the fact that I'll be watching because "I've purchased EBCI and if people board out of order, then they & SWA are STEALING from me because I don't get what I paid for........."
I thank them, using their name, and go sit as close to the podium as I can, smiling.
It seems to get their attention. I see more line jumpers being asked to wait their turn than I did before I started this--AND--the GA explanations DO seem more detailed.