Thank you all for your feedback.
Katys Grandad, we are flying non stop to JFK from Sydney (21hrs), we then fly the next day to Buffalo and stay 3 nights in Niagara, we then fly from Buffalo to Orlando for 10 nights then back to NYC for 7 nights.
Sounds like we'll need a car for the whole stay in Orlando. Anyone suggest the best hire deals for cars?

melfrank - Thanks for your suggestion, Indian creek looks ok.

What is the 192 like? I know its a main road but what can we find there close to the villas?