It seems like most of your questions have been answered. You didn't say when in Dec. you are going, but unless it's around the Christmas season, you can definitely get a lower rate using the Entertainment card. HIFS offers 50% off rack rate, which should be about $74 for Dec. (again, unless it's right around Christmas). We went in early Dec. and it was perfect. No crowds, and all of the Christmas decorations were up at the parks. They have lighted, wire sculptures on the little lake by the hotel restaurant, a Gingerbread house, some other things I can't remember.
We asked for the Disney themed room, and it was beautiful. No characters, but a very airy, magical rendering of the different parks (Cinderella's castle,etc.) all in pastels. I think any little girl would love it!
In our Kidsuite the activity table had a checkerboard painted on the top, and my girls got checkers, coloring book and crayons and some other trinkets in their goodybags.
Not only can you bring food back to your room, but if you're running late in the morning you can grab some donuts, bagels and fruit and bring it to the parks with you. What we did was fill up at breakfast, bring snacks into the park, and then have a sit-down dinner. We never ate a single lunch there, and were never hungry either. Between that and the free breakfast you will save lots of money. The club car offers both a buffet and menu offerings every night. The buffet has a different theme each night, like Seafood, TexMex, BBQ, etc. I am sad to say we did not enjoy the dinner buffets very much, but you be your own judge. We are going back in Oct. and will plan more dinners elsewhere.
It is super easy to find your way around. It is a great location, close to all the WDW parks and all the main roads to Universal, etc. Yes, they will give you directions at the front desk.
You will have a great time!