Didn't take the tour to Olympia had been there before, but if you are into ruins, museums the tours are cheaper when you get off the boat, again just walking to the lovely seaside resort, about 10 euro for a tour.
What a beautiful place, a must see, take the cable car to top and enjoy a coffee in a taverna over looking the port. Tip, don't rush down to get tender, avoid the que, have a leisurely breakfast and step on to tender with no crowd.
A surprise to me, it is a lovely town, had to take port shuttle because it was a 30min walk and it was 30c so worth the 12 euro each. Lovely around the old town and reasonably priced shops and coffee bars.
Again you need to take a shuttle bus it is a bit of a walk from the port into the old town, but what a wonderful place, only complaint, we only had a half day, it was Saturday, and there was thousands of people, overcrowded, would loved to go at night when all day trippers left.