Hello Brian and thanks for bringing such a wonderful question to us here at the Disney Parks Moms Panel!
How completely fabulous that you've a magical vacation to Walt Disney World Resort to look forward to at the very beginning of 2019 - what a great way to begin a new yEar!
Generally speaking when I arrive late in the day to my Disney Resort Hotel I usually opt for a leisurely evening perhaps with a stop off for a lite bite or small dinner at a Resort Hotel which benefits from a fireworks view such as
Disney's Polynesian Village Resort where Guests can comfortably enjoy the breathtaking
Happily Ever After (including the uplifting soundtrack which is piped in on hidden speakers!) from the beach area without having the need to enter the
Magic Kingdom Park.
Alternatively
Epcot always looks beautiful at night and I certainly don't ever like to miss catching a spectacular performance of
IllumiNations: Reflections of Earth which in my option is best viewed from somewhere near the United Kingdom Pavilion in World Showcase where I can highly recommend purchasing some truly British tasting
fish & chips from the Quick Service location
Yorkshire County Fish Shop to enjoy as you marvel at the fireworks & laser projections as they dazzle through the Florida night sky.
Have a great Disney day.
~ Jane