Falmouth has year round resturants, beaches, shops, etc.
Come and walk the village, have a wonderful meal, watch the sun go down on the ocean, and enjoy the holiday lights and fun.
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Best Of Luck.
The sights of Boston may be enough. We have plenty of restaurants and shopping and history to keep anyone busy for a few days at the very least!
as someone mentioned below, boston.com is also a good resource.
In my personal opinion:
Eat, drink, and be merry - hit the North End for some good eats :)
Also, for entertainment - Duck Tours might be fun!
And finally, our family favorite is the Frog Pond - ice skating and viewing the park all lit up!
Go ice scating on the Frog Pond or on the Kendall Square outdoor rink.
Look up chocolate and cupcake tours of boston - those are always fun!
Go Salsa Dancing :) Salsaboston.com has good info.
the Institute of Contemporary Arts and the Museum of Fine Arts are always good.
Boston.com has good info in the "stuff to do" section.