We will be staying at the Comfort Inn, Woburn, MA and need to go to the GrayLine Transportation Building at 10 Park Plaza in Boston. We don't want to drive through early morning rush hour traffic and pay to park our car in Boston all day. Is it possible to park in a hotel lot all day? Or, is there a bus or subway we could take from Woburn to GrayLine tours? btw, this is our first trip to Boston, so we have no idea how to get around the city. Thanks for any tips/help.