To be honest it's not even clear that "for a few hours" is fact. It doesn't appear to be footnoted or sourced in the report.
Visiting a private island in the Caribbean from your home base in Boston is a full day affair. Total one-way travel time from MIT campus to that island is about half a day. Seems at least as likely to have been an overnight trip.
Visiting a private island in the Caribbean from your home base in Boston is a full day affair. Total one-way travel time from MIT campus to that island is about half a day. Seems at least as likely to have been an overnight trip.