Depending on when you get in (assuming you're flying) you might consider staying in Orlando. I know that Barb and Tony (atipeg) use hotwire or priceline (I can never keep them straight) a lot at Orlando airport.
We just did the internet search thing (because I was afraid if I didn't know exactely which hotel I was out I'd get stuck in a Day's Inn) and we got the Amerisuites NE for $59. We've got free airport shuttle and free breakfast.
When I tried a week later to add a day there on our way back, it had gone up $20, so we ended up booking the Country Inn and Suites by WDW (we're doing a one-day strafing run at the Magic Kingdom on Saturday).
Good luck!