Does anyone know tell me some cool places to take my children in Kissimmee?
Medieval Times! It's a Joust Dinner Show, with nights, horses, battles and contests. They've just revamped their show and its so much fun. (search for orlandocoupons.com for a great admission discount)
There is also LegoLand- they've just opened their new waterpark, which is very kid friendly and is a great way to cool off in the Florida heat. about 8 years ago