There are all sorts of restaurants down the road on 192.
Here are some map links:
This first link is the first mile of 192 as you turn onto it from 27. Looks like Dennys and McDonalds are your only breakfast options there. These would be the closest options.
http://www.kissimmee-us192.com/map/map1/kiss192map1.htm#1btm
This second map shows a Golden Corral, Wafflehouse and Dunkin Donuts. Even though it looks far away on the map, it isn't. You could stop at one of these places and then hit the Sherbeth Road shortcut to the parks. You can see it on the map.
http://www.kissimmee-us192.com/map/map2/kiss192map2.htm
Just past the Sherbeth Road shortcut is Ponderosa. They have a breakfast buffet for $3.99.