Weddingbee boards

That is right near where I am getting married!  What type of event are you looking for? Just renting out a room/area of a bar/restaraunt? What is your price point?

Those are all great ideas, here's some others.

The Atlantic Beer Garden - fun, has beautiful outdoor patio/bar

MJ O'Connors - a bit more of a walk, maybe 3/4 of a mile (but it is located within the Westin Hotel) and has great food and awesome drinks - it's a very "Boston" bar

Morton's Steakhouse - an incredible steakhouse, but definitely high on the price end

Harpoon Brewery is also located right near there and I imagine would give you a great deal on a Brewery Tour and I think they do events there as well

FYI:

The Legal Seafood that is there is actually called Legal Test Kitchen (LTK) and isn't your typical Legal Seafood -- it's still really great food but it's actually their test kitchen where they test food.

Anthony's Pier Four is a very old established place in Boston, but it isn't exactly what it used to be, still a very classic location to bring people who don't know Boston well, but it's seen better days.

Barking Crab is SUPER fun and outdoors and very great for a summer event, but it does get fairly crowded and I'm not sure they'd be able to house a group that big (but I could totally be wrong - so double check that!!)

Which hotel are you all staying at? My wedding is at the Seaport World Trade Center, as a part of the Seaport Hotel.

Let me know if you have any other questions!