We've done this a few times, using Priceline. We bid and received Sheraton Safari for $29, it was an excellent deal. Nice hotel, right outside the gate for DTD. Another time we got Hilton at DTD for $60, another great deal and great place to stay for one night. Another time we were starting our vacation with 3 nites at Hard Rock at Universal. We Pricelined and got Wyndham International Drive for $30, that joint was not so nice.