Oh, and since Universal does not own the hotels, there is a fee to park at the hotel or at CityWalk. CityWalk is between the two parks. And since that time is as crazy as in Disney, I would absolutely make restaurant reservations. Trouble is, not all have the same 60 day before. You can make restaurant reservations on Universal's website, and opentable.com.
I highly suggest staying at one of the 3 hotels that have an unlimited express pass as a perk for staying there. Plus, all three are an easy walk or boat ride to CityWalk, where you then access both parks.
Check the stickies out here. Lots of great information. Also, check and explore Universal's website. Lots of great information there too. Many of us book the hotel with Loews and buy tickets from an authorized ticket seller, like undercovertourist or maple leaf tickets. Bundles of hotel and tickets are not always the cheapest and they have change and cancellation fees. Room only has a more generous change and cancel terms.
When you have a better idea of what you need help on, ask away. We're a friendly bunch of Universal fans. We fondly call it the darkside, as many find it more less known than Disney, the motherland.
And have an awesome time, we love the parks during the holidays. I'll be up the street, at Sea World during that time, but be sure, since I have an Universal AP, we will come to CityWalk once or twice, to play mini golf and enjoy some of the restaurants.