Their boats traveled about 3 mph. They spoke Greek. The Arcado-Cypriot seems to have come directly from the Greek written in Linear B. Its continuation in Arcadia and on Cyprus could be due to the same linguistic processes that led to Icelandic's separation from modern Scandinavian languages, isolation vs. turnover.
If sailing to Asia Minor, you'd be much more comfortable leaving from around Athens than from around Mycenae. If sailing to Knossos, you'd be more comfortable sailing from Athens than Mycenae. If sailing to Pylos, you'd be slightly more comfortable leaving from Mycenae than Athens. Just setting the record straight, don't shoot me.
Not very smart were they? Look at this for a second guys. Try to be serious for a second. If they treated their slaves with dignity and gave them picnics on ground every 10 hours, as they probably did, they were civilized, look how many days this would have taken them. I'd have just stayed at home, that's what I would have done. But in Athens? Probably take 2 days off this. Also you've got a little more downhill momentum given their latitude. I think. This is what I think. I think Mycenaeans just gave up on Mycenae and decided to become Dorian because, yeah, this shit was getting kind of old I think.