Hi Jennifer!
Weather in January can be downright pleasant or quite chilly. I'd absolutely check the extended forecast at weather.com (zip code 32830) 3-4 days prior to your vacation to get a better idea of the forecasted temperatures for your vacation.
Highs during this period average in the low 70s, and lows average in the upper 40s, low 50s. Definitely pack a light jacket and some pants in case of a cold snap!
Picky eaters are difficult to plan for. If you plan on dining at many character dining locations, I would go ahead with the Dining Plan because of the expense. If you've already reserved several buffets, the cost can add up quickly, and make the Dining Plan a great value! I'd also keep my eyes out for a Free Dining Promotion for your vacation dates, by checking the
Special Offers page. That'll make the decision really easy for you! Disney also has a great kids menu at most locations that will usually please those picky eaters.
Have a magical vacation!
Amanda