A good way to travel that has a lot of fun too is by hiring a 4 wheel motorcycle, it isn’t hard to drive, the typical qualification to rent one is to have a car driving license, and it is very funny and amusing to drive one of them around the island. You could always use the public bus transportation but bear in mind that in some cases itineraries stop at midnight and start again at 5 in the morning so plan your club visits accordingly. There is a webpage in which you can be informed about the bus itineraries in order to be able to have an idea of how to plan your transportation. . As far as concerns of how to reach Santorini in the first place, this can be done by Pireaus port and also by Athens International airport. There are several itineraries during the day in the summer which run less frequently in the winder.