This post makes me laugh for so many reasons:
1) Like the poster, I'm approaching 40 (which actually does not make me laugh, but at least I'll be at WDW when "it" happens);
2) I'm flying out of Bradley -- airport code is BDL;
3) There are so many code words on these boards, that I can understand your confusion. However, here's the answer to your question about what the discount code BDP means:
BDP is the "room-only" code that became available to the general public on October 22. It's for 1/2-4/16/05 with supposed blackouts for 3/11-3/13 and 3/17-3/19, but we were able to get discounts on these dates, too. FYI, there is an alternative corresponding code for packages.
If you already have a room only reservation (or if you want to make a new reservation), call and see if there are still rooms available at this lower rate.
Others can tell you how much they saved. We're staying at the Poly. and already had a reservation. Called on 10/22, and the code lowered our room price by $128/night.