Taking the Ferry to Mykonos?

[axariotisxy]

I am planning a trip for Greece next year to Greece. I usually fly into Athens and then fly into a place like Santorini or Mykonos from there.

I plan to go to Mykonos next summer and I am kind of sick of flying.

Is the ferry situation easy from Piraeus? Is this a better option than airplanes?

Someone told me I could wait until the last minute and buy the tickets that day, but I am not sure I feel comfortable with that...