We are coming down to disney for 10 days (aren't we lucky?) and will be staying off grounds, but very close for 5 nights, and the remaining 5 nights at Port Orleans Riverside. We want to take one day and go over to Universal Studios. We are flying down so will need to get to our hotel and back to the airport also. In your opinions, is it better to rent a car for the 10 days, or just get airport shuttles and a taxi to Universal?