I have booked one night at the Philadelphia Airport Marriott to stay the night before an early AM flight with AirTran. Is it worth the extra money to stay here, or do you think I am better off at on of the local park/fly hotels with a shuttle? I need to get to Terminal D, so is it easy enough to walk? I know the hotel is connected thru Terminal D skybridge. How can I do this with 2 kids and luggage?