I understand there to a shuttle to and from the airport... what time does the last shuttle run from the airport?

24 hour service

I drive limousines to an from the airport to all of the Hotel. The airport has shuttle that will shuttle to the Hotel's around the airport but not in to downtown. You would have to ask about share a ride

I also believe it's around the clock. You need to call the hotel AFTER you arrive to the hotel shuttle parking section

I think it around the clock