Don't know where you'll be staying or how far you want to go, but there's a very good joint on Irlo Bronson parkway, in east Kissimmee, right between the North and South turnpike exits. It's a bit out of Kissimmee proper, but easy enough to get to with 192/Irlo Bronson being a common artery and Turnpike access. China Wok, in the Parkway Retail plaza, just east of a big Osceola county building. I've tried a few close to the Disney area, but wasn't impressed with most - this one was good food.