Found it! I really do love Google.
This particular day of observance prays for a beer. The Pilgrim Fathers came from Plymouth and Leiden, but they did not have a remotely good time (by Puritan standards) until they reached Massachusetts. They landed there, instead of Virginia, because they had run out of beer and had to stop and brew some more. Why else did you think they thanked God each year for the bension of their new homeland?
http://www.beerhunter.com/documents/19133-001346.html
So, what you're saying is that the Kennedys got there first and already had the liquor racket all sewed up, so the Pilgrims had no choice but Massachusetts?