We are flying into South Beach for 4 nights before driving down to the Keys for a few days, From Dec 30-Jan 6 over the holidays. We will need to rent a car to get down to the keys; however, I was wondering whether or not would it would be wise to rent a car for the whole week so we could have a car in South Beach. It is SUCH A CROWDED TIME OF YEAR. We are going to the Heat game at the American Airlines Arena Jan 2, so we could use the car then; is it worth the hassle of renting a car for that or not? If not, what is the best way to get to AA arean from SB during holidays!!!!????? We have our 10 and 11 year old kids. Thanks!!!