Hi Janet,
Wow, your trip is getting so close. I bet the kids are super excited!
I do happen to know the supplies you can purchase at Fulton's General Store, as we just stayed there a few weeks ago and made our own supply purchases. The store offers a selection of juice, milk, soda and alcohol as well as chips, bread, cereal, candy, breakfast items like pop tarts and doughnuts as well as additional snacks like nuts and granola bars.
We find the selection at the Disney resort merchandise locations enough to get us through breakfast and late night nibbles. If you are looking for a larger selection or more substantial food choices, you may want to check out
www.gardengrocer.com. This online service will allow you to order groceries prior to your arrival and have the order delivered upon your arrival.
Wishing you an amazing time!