Yes, there's a Fan Fest, and no tickets to the game needed. It's on Canal street.
Opening Day Fan Fest
I don't think they've done this for 3 or 4 years - last time I remember an Opening Day Fan Fest, it was in the parking lot, which is right now the epicenter of Jeremy Jacob's current monstrosity - The Dump on Causeway.
They've quietly announced the freebies today, too. (I know because I have a strange love of bobbleheads, and I checked yesterday.)
Promotions and Giveaways
They -STILL- are limiting most of the TD Bank giveaways to 5,000 - probably to trap people in the Garden to get some good old Delaware North beers. Schedules apparently aren't the cheap stickers from last year - yay, magnets. I guess they got the memo. Chara bobblehead. As always, a wall calendar on the first game after New Year, and a St. Patrick's Day hat. (Can I just have a normal, non-green Bruins hat, and leave the St. Patrick's stuff to the Celtics?)
And...a Pasta's Pasta? I have no idea what that is. I'd like to think that it's a poster of Pastrnak and the Flying Spaghetti Monster touching fingers/noodly appendages ala "Adam and God" by Michaelangelo.