I belong to two local quilt guilds.
One is over 100 members, meets twice a month - 1st Friday morning is for show-and-tell, Robert's Rules of Order-style business meeting, BOMs, other monthly projects (of which there are a ton!), announcements; the 3rd Friday morning is for more show-and-tell (always done first thing), left-over business, and a program/lecture-workshop usually by a guild member. Meetings are full and very busy. This guild gives workshops every fall and a quilt show every other year.
The second guild is small, about 30 active members, and meets once a month for show-and-tell, discussion-type business meeting, BOMs and other projects, snacks provided by members. This membership focuses more on their own projects than community quilts or other team efforts, and they have a lovely show EVERY year for free at the library. It's an amazing show for such a small group, but the members tend to be clique-ish and the guild has not grown much in several years. They also meet every Monday night for sit-and-sew, sort of like a bee, and the same members (about 10-12) attend this every week after meeting for dinner first at a local restaurant.
I'm much more active in the first one, and it's from that guild that help for the Military Barracks Quilt Project is coming locally.
Jan in VA