Hi Anup,
I hope that you're getting excited about visiting the most magical place on earth during the most wonderful time of the year! The entire Walt Disney World Resort will be in full-on holiday celebration mode, and the sounds, smells, and experiences will certainly fill your heart with Christmas joy and leave you with memories you'll cherish forever!
You'll find a spectacular parade each day at Magic Kingdom Park. During the time of your visit, you'll find my very favorite parade of the entire year,
Mickey's Once Upon a Christmastime Parade, currently scheduled twice a day at 12:00 p.m. and 3:30 p.m. I'd encourage you to grab a yummy snack (anything Mickey shaped is always awesome!) and find a great parade viewing spot along the route at least 30-45 minutes before the parade begins.
As far as fireworks go, you'll find that all four theme parks have their own incredible
fireworks display. You may view the
park hours calendar for the week of your trip to see all of the times that each display is offered, but if you're looking for a Christmas-themed fireworks show, I'd again point you to Magic Kingdom Park where you'll find Holiday Wishes - Celebrate the Spirit of the Season lighting up the sky each night during the week of Christmas. It's an AMAZING way to celebrate the holidays and the perfect end to a magical day!
Thanks so much for visiting us at the Disney Parks Moms Panel, Anup, and please let us know if you have any other questions as you're planning your trip. I hope that you have a truly magical vacation!
Missy