hey hey thommi01
just to be on the safe side, I would obtain one at AAA.com it’s about $25, 2 passport photos, good for one year, receive same day. each driver needs one
may not be greece itself, could be car rental company that asks. some friends didn’t have one and were refused rental. best to have “bird in hand” then stress and ugly feelings. my own opinion
enjoy Mykonos, one of my favorite islands on our greek island cruise. roamed around the beautiful alleyways, was nice to see so clean, houses with colorful bougainvilleas, residents on porches sweeping and saying hello or waving, the windmills and beaches. sat at outside cafe oceanfront having appetizers with Mykonos beer before boarding ship.
check out mykonos brewing company for a tour and/or tasting a flight of their beers
aloha