WOC is almost always run nightly (and even runs twice a night quite often), no matter what time of the year, unless there is something wrong with it.
In the past, Fantasmic during the busier seasons runs nightly, and only on weekends during the slower seasons. I believe all of December would be part of the busier season, but it hasn't been running for a couple years, so I can't say with certainty.
Fireworks is similar to Fantasmic, it should run daily in december. As PP said, it ran daily last year. As always, with the fireworks, if it's too windy, then the fireworks will be cancelled, no matter what day or holiday it is.