I'm sure there are alumni contact details on their site. Get in touch with admission cell, they will fix you up with someone.
If you want to do non-MBA stuff, then there are plenty of good-things-to-do in Boston. Visit Harvard, take Harvard Historical tour, walk down the freedom trail, visit New Englad aquarium, Museum of Science, Museum of fine arts, Go for a ball game in Fenway park, Take whale watching or sundet tour from Long Wharf, Get Segway tour of Boston downtown, Shop and dine on Newbury street or Quincy market!!
Lol, I sound like a travel agent! But can't help, I love Boston!!