If you are arriving by boat, take note that there are two ports, often referred to as The Old Port (right at town) or The New Port (a couple of minutes by car north of town in Tourlos. Make sure your hotel pick up knows your ferry line so they know which port you are arriving at. There’s also public transfer from Tourlos to the old port.
Here’s a link to all ferry info. http://www.fantasticgreece.com/ports/mykonos-port.aspx
THE AIRPORT – 2 Kilometers from the town harbor
There is a taxi stand right outside the exit doors.
Car and bike rentals
are available both inside the airport and out the exits doors to your
left just across the street. I suggest you arrange your vehicle rental
before arriving on the island.