I think you need to give us more to go on. Do you want to stay on site or is off site ok? Do you need airfare too and if so, from where? How many people?
Start by checking the Disneyland.com website. They have 4th night free around those dates. They are getting full, so if you can't find availablility, check with some one line places like expedia, travelocity, orbitz. You might also check
www.getawaytoday.com and Costco.com travel.
For offsite hotels, I highly recomend Candy cane inn (
www.candycaneinn.net) You have to book thru Disney,
AAA, or directly with them- they dont sell rooms to online places like expedia. Hojo's (howard Johnson) is also another fav in the area.
We like to fly into Long Beach airport, and find the flights into there are often a little cheaper. Its a short drive from that airport to the parks. So, we rent a car. The last couple times I have gotten a car for under $50 (total) for 4-5 days. For a family of 4 its cheaper then a shuttle.