Our family (5 adults and two children)is visiting Key West for the very first time Dec. 27th through Jan. 3rd. Our original flight with Midwest to FLL has been cancelled. We are now flying with American into MIA. I had to cancel our mini-van rental at FLL, and now I am having difficulty finding a reasonably-priced rental out of MIA. We are staying at Coral Hammock on Stock Island. Any suggestions?