One size doesn't fit all, so it should come as no surprise that a currency made for industrial nations doesn't work so well for a tourist economy.
Umm... that wasn't what this referendum was about. The Greeks will never accept an exit from the Euro. Even though they thoroughly deserve to be booted out.
What do you think this referendum was about? A "no" vote is effectively the equivalent of Greece saying "We will not accept your bailout deal, so if you do not give us a better one we are leaving the Euro". Unless the EU caves, Greece could be off of the Euro this week.
While an argument could be made that the average Greek didn't fully understand what a "no" vote means, there is no doubt what it means for the economic future of Greece. Either the EU caves on Monday or Greece starts to print drachmas. (or some other lender comes to the rescue, but that is a very far fetched possibility)