I already have a room, but I noticed there is a back door work-around for getting rooms at the Hilton, going through the Sea World site. They have a Christmas vacation package and they must have a block of rooms set aside, as right now you can book the sold out days through them. It's just a bit higher price, but you get admission to Sea World included for all days of your stay. It's also a per person price, so for just the two of us, it would be about $1100 for 3 nights, vs. the $1000 for three nights on my original reservation. If you are a party of more than 2, it probably won't work as cost goes up, and they only have king rooms available.