Perhaps check out the flashy new Contessa on top of the Newbury (old Ritz) and then have a nice walk through the Public Garden and Common to the show? I have not been to Contessa or in the space since it was redone. However, in it’s previous iterations, that space may have been the most lovely in the city. The group who opened Contessa turns out consistently good (if pricey) fare. It might be just the thing for a memorable occasion such as this.