Hiya Kyle!
Welcome to planDisney! It looks like you are in a bit of a pickle my friend. However, don't fret as this will not be an issue for long.
If there is one thing that is truly in the spirit of Walt Disney, it is the idea of
"plus it up." One way it is shown is by how easy it is to improve or upgrade your tickets, experience, and even dining. Most tickets are eligible for an upgrade right from your
My Disney Experience Mobile App. Open the app and click on the three stacked lines on the bottom right of the screen. Select "My Tickets & Passes." You should see your three-day tickets there. There should be an option to upgrade or change the ticket. You should be able to increase the number of days and even add the Park Hopper option to the ticket if you have not already done so. If for some reason this does not work then I would call
"Existing Tickets" to speak with a Cast Member about your tickets. There will be a price difference that you will have to pay.
If you purchased date-based tickets then you will not need to make
theme park reservations. However, if the tickets you purchased from AAA are different in some way and do not have a date range linked to them then you need to make theme park reservations for your Park days. Two days in EPCOT in September sounds perfect as you can take your time enjoying the
EPCOT International Food & Wine Festival which should be happening around then. Make sure to check out the
Disney Parks Blog for updates on all the yummy food and events!
I hope this was helpful to you and if you have any more questions please free to
let me know!
Happy Planning!
-Nimmy