Hi Cathleen,
Thanks for your great question. You can see Epcot's
IllumiNations at 9 p.m. each evening a majority of the time, though during some special events and some holiday periods, the fireworks and projection show moves back to 10 p.m.
You will be visiting during the Epcot International Food and Wine Festival, one of my favorite "seasons" of the year. Right now, the park is scheduled to stay open later on Friday and Saturday nights during the festival to give guests more time to enjoy all the food and beverage treats. So IllumiNations is scheduled for 10 p.m. on those later nights.
Schedules, of course, are subject to change, but you can check daily times for IllumiNations at the link I provided above.
I hope that helps. Please let me know if I can answer any other questions for you as you plan your visit.
Wilma