Hi there, Monica!
Like Disney, we are grateful for the service of all of our military personnel.
Based on your dates, I can say that yes, you will be able to see performances of the same show on different days and at different times.
Typically, only special events like
Mickey's Not-So-Scary Halloween Party and
Mickey's Very Merry Christmas Party will find Guests seeing alternate fireworks and parades, specific to the special event. Christmas week is another exception, during which the Christmas parade replaces the 3:00 PM parade (currently the Celebrate a Dream Come True parade).
Each Park does offer a calendar of operating hours and parade/showtimes; you'll find
the one for Magic Kingdom here, for example. A quick check of the calendars will certainly help you plan out your day.
Do remember that event times are subject to change at any tie, so grab a Times Guide each time you enter one of the Parks.
Have a great trip!
See you later, celebrator,
-Deborah B.