Hi Nicole,
The park hours for September 2012 have not yet been released on the online park calendars which can be found on the Walt Disney World website. I would expect to see the online park calendar to be updated with information on September 2012 at the beginning of March 2012.
To find out when Fantasmic will be taking place during your stay, you will need to follow these steps:-
1/ Visit the Walt Disney World website
2/ Click on "PARKS"
3/ Select Disney's Hollywood Studios
4/ On the left hand side of the page click on "Calendar"
5/ Select September 2012 from the drop down box next to "View Month" which always displays the current month
6/ Click on 15 September 2012
You should now be able to see the times of any parades/nighttime entertainment which is scheduled to take place on this particular day.
From here, you can simply keep clicking on "Next Day" to check for the other dates of your stay.
My family have participated in the
Fantasmic Dining Experiences during previous visits and I do personally feel that it is definitely worthwhile - anything which reduces time spent waiting in line at the parks is pretty fantastic as far as I am concerned.
The main advantage of the Fantasmic Dining Experiences are that you are guaranteed a seat for Fantasmic and that you only need to arrive 30-45 minutes prior to showtime. The reserved seats are located in the Ursula section of the theater which is located to the top right hand side of the main stage area.
Wishing you a magical trip filled with memories which will last a lifetime!