My son is a grad student at MIT, and I was thinking about visiting during my spring break in mid-March. We stayed at The Kendall in September and absolutely loved it. So, I know where I will be staying, and I know some places I want to eat. My question is, can anyone suggest a reputable tour company to maybe visit Martha's Vineyard while there? We will be bringing our twin teen daughters on this trip. It will be their first visit, so I know we will do the walking Freedom Trail and the sites in Boston. We learned how to travel the T when we were there in September. My plan is to stay busy during the day and then meet up with my son for dinner. Any suggestions for day events will be greatly appreciated. We will probably arrive on March 13th and depart late on the 17th. Also, what do suppose the weather will be like in March? Sweater weather or still need a coat? Thank you.