Hi Aleksandra.
Thanks for visiting the Moms Panel with your question.
Your upcoming visit seems to be timed perfectly with when the videotaping of the Walt Disney World Christmas Day Parade is done, typically the first weekend in December. The filming of the performances as well as the parade, is done in segments based on the performers' schedules and the weather in the area. I've enjoyed the experience in the past myself several times and was lucky enough to happen to get to see Jennifer Hudson perform in front of Cinderella Castle while riding along on the Tomorrowland Transit Authority PeopleMover!
There are indeed a couple of table service restaurants along the usual parade route at Walt Disney World. Your best bet for dining and catching a performance or parade segment would be
The Plaza Restaurant which is located at the top of Main Street U.S.A. This casual dining location has many windows since it's on the street corner, as well as some outdoor seating. A second option to consider would be
Tony's Town Square Restaurant, located at the other end of Main Street U.S.A. closest to the Train Station. Some seating in the 'sun room' does have an outdoor view of the roundabout however most seating inside the restaurant has no exterior view.
I hope you're lucky enough to be in Magic Kingdom at just the right time to be able to catch some extra magic during your Walt Disney World vacation Aleksandra!
Please feel free to write me back any time if I may assist you further with your planning.
Kirsten