Looks to be one of the larger WordPress meetup around town. Meetup claims they have 1,100+ members. See their Meetup Page. They're meeting at IgniteHQ on Waddell St. in Marietta. Their description on Meetup is somewhat generic:

We're a group of local WordPress users who get together to share our knowledge and experience, and to meet other WordPress users in the area. This WordPress Meetup is open to all who are eager to learn more about WordPress --- the software, the community, and the business!

They seem to have a good mix of technical and non-technical programs.

Events - Marietta WordPress Meetup

Events - Marietta WordPress Meetup
  • Marietta WordPress Meetup

    For our final Meetup this year, we'll be talking about all of the things we learned this year. This will probably talk about a lot of tools, but also ideas on stretching existing tools, new business ideas, and other great finds.

    We'll have some thoughts to kick things off, but want to hear about the great things you've learned this year too!

    The Meetup is free because of our awesome sponsors, however we ask you to please RSVP so we can save a space for you.

    Be sure to bring your laptop if possible, and you're welcome to bring your own lunch if you'd like.

    Note on parking: The building next door to IgniteHQ has been sold, and people can only park directly beside and behind the IgniteHQ building. If you part against the other building, you may get towed. If there aren't any spots left, there is a public lot for $5 a block away at the intersection of Waddell and Anderson.

    Marietta 30060 - USA

    Thursday, December 20 at 11:30 AM

    2

    https://www.meetup.com/wpatlanta/events/256924339/

  • Marietta WordPress Meetup

    We’re a group of local WordPress developers, designers, and publishers who get together to share our knowledge and experience, and to meet other WordPress users in the area. This WordPress Meetup is open to all who love WordPress — join us!

    Learn more about WordPress Meetups at https://make.wordpres...

    IMPORTANT: DON'T GET TOWED
    The building next door to Ignite HQ is under new management. They will tow anyone that parks on their side. If there aren't any spots left, there is a public lot for $5 a block away at the intersection of Waddell and Anderson.

    You're welcome to bring your lunch!

    Marietta 30060 - USA

    Tuesday, January 8 at 11:30 AM

    3

    https://www.meetup.com/wpatlanta/events/257084422/

  • Marietta WordPress Meetup

    We’re a group of local WordPress developers, designers, and publishers who get together to share our knowledge and experience, and to meet other WordPress users in the area. This WordPress Meetup is open to all who love WordPress — join us!

    Learn more about WordPress Meetups at https://make.wordpres...

    IMPORTANT: DON'T GET TOWED
    The building next door to Ignite HQ is under new management. They will tow anyone that parks on their side. If there aren't any spots left, there is a public lot for $5 a block away at the intersection of Waddell and Anderson.

    You're welcome to bring your lunch!

    Marietta, GA 30060 - USA

    Tuesday, February 12 at 11:30 AM

    1

    https://www.meetup.com/wpatlanta/events/hlddlpyzdbqb/