There will be a dinner shuttle from the Westin to Faneuil Hall Marketplace from 6pm - 11pm on Friday, Saturday, and Sunday nights. The shuttle will pick up/drop off in front of the hotel and at Quincy Market at the McDonald's. The last shuttle will leave Quincy Market at 11pm.
Faneuil Hall Marketplace is a large hall with a collection of small food stands, large restaurants, and shops.