Something like this might already exist, so pardon me if it does; but I think it'd be cool to see a BRS event at one of the larger LFS in the Boston area (maybe at a BRS sponsor's place) where you run multiple workshops and talks on different topics related to reef-keeping throughout the day, kind of like MACNA, etc.
You can charge members a registration fee ahead of time and provide food, drinks, and entertainment (could just be hiring a dope, local DJ). It might be a good idea to partner with a local bar, restaurant, or catering business for this event. The fish store (or sponsor) itself can offer discounted coral and fish to attendees (or to members only). At the event, members could have a chance to share reefer testimonials of how they've overcome some common reefing challenges, in unconventional ways. Something like this would also be a good opportunity for sponsors to make merch sales and take mailing list signups and special orders.
Summer is around the corner, so a member with a big enough yard can also host one of these events at their place, and sponsors can setup tables with discounted livestock, supplies, gear, and merch there. Maybe one of the popular members, with a really popular build thread on this forum, can be the host so as to give us members a chance to see their build in-person.
Choosing the right location for this event can absolutely be a game-changer because imagine going to an event like this at the New England Aquarium (don't know if they have function halls), or even on a large boat in the middle of the ocean—this would be great for content. There are places like Fun City, or any other place where parents take kids to run around and play, where they also rent rooms for parties—these places could make great locations for these events as they have multiple rooms for multiple workshops and could function as dual-purpose spaces for both our meeting and our families (obviously no alcohol if done there).
That's all I got. Thanks for giving us the opportunity to chime-in like this.