How about doig some timeshare presentations. They always give you free food. Having 8 chidren they likely will not keep you the full 3 hours. You can also get cash instead of tickets sometimes.
Wilderness lodge has a nice area with beach lounge chairs by the lake. Why pay hotel cost.
Buy some of Those glow in the dark necklaces to sell before night time shows, fireworks, ect. You are not going in a couple of weeks are you?
If so, stay away from my kids turf when selling glow things.
Be sure to take large cups to Epcot to fill for the night, fee soda.
Sams club is not to far away, great free sample snacks.
There is a fountain near Cindys castle. Kids could help Disney out by removing those coins so they do not get into the pump.
DVC resorts have free ice and laundry mats. No need to bring too many extra cloths, Just one extra set for the backpack.
The ice will be great for the leftovers from the free buffets.
Actually, you may not even have to watch a timeshare presentation. Just go to the resort, find your way to the buffet fill a plate find a seat, there is 100s of people, who will no you do not have a vulger trying to sell a overpriced resort to you,
BTW, DVC does not give free buffets to see there resorts but they usually have cookies and lemonade. Also, they usually have a DVC presentation at one of the resorts that has good continintal breakfast food.
Well, I will keep some of my other tips for another trip.
Have fun
Tigger