The Autumn Winter Spring Itinerary recommended for this arrival date shows you at the Magic Kingdom the evening of the second Saturday to see the fireworks show and evening parade.
However, these are not being shown this week that night— September 11.
Because of other scheduling issues, the only night you can see both is Monday night September 6.
The simplest approach is to swap Monday and and the second Saturday night in your itineraries. You will also have to swap the restaurant reservations in your To-Do list for these two evenings.
Questions? Use the comment form below, or email me at davidhobartyfv@gmail.com.