Early May is a wonderful time to go to WDW! I don't think you will regret waiting until then. We went in mid-May 2003, and were able to snag a code. We paid $129/night for a standard room at AKL (and then were upgraded to pool view at checkin). I can't exactly recall when we got the code, but I know for sure it was earlier than March. I would suggest booking your room-only reservation at the resort you want now, and then watching this board and mousesavers.com like a hawk for word of a code for May. Codes are never a guarantee, but they have traditionally been available in recent years for the time you want to travel. I can't recall when the current codes are ready to expire (I haven't been paying attention as we have no plans to travel to WDW in the near future), but when they do, you will likely see new codes for the months that follow those that are good for the current code(s). When you learn about a code for the time you want to travel, call asap to apply it to your existing reservation. Disney only blocks so many rooms for particular codes, and some can go quickly.