The money you will save by not having to park your car in a $29.95-dollar-a-day parking garage should be reason enough. The MBTA (which consists of a variety of modes of transportation including train, subway and bus) is easy to navigate, quite inexpensive ($1/token gets you on your way) and provides quick access to all parts of the city. Ample cheap parking is available at most stations. I also urge people who don't relish the thought of driving umpteen hours to get to Boston to consider the train as an alternative - a really great one if you don't drive/don't have a car.
Since this is an Anime convention we're talking about, I'm sure there'd be an interest in visiting Chinatown while you're at it, which has it's own, very convenient MBTA station smack dab in the middle of the "neighborhood."
Visit http://www.mbta.com for all the info.
If there's interest, maybe even "Anime Boston" groups could arrange to meet at certain stations and ride the train in/out together. Safety in numbers, you know? (j/k)
I will be taking the MBTA rail into the city from the South Attleboro station, myself, so anyone who's uneasy about riding the train/subway and is heading to Boston from this direction is welcome to tag along. Roundtrip fare is about $9 per person from this point into Central Station.
