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 (Metro Atlanta) WordPress Meetup

Events - Marietta (Metro Atlanta) WordPress Meetup
  • Marietta (Metro Atlanta) WordPress Meetup

    Topic To Be Determined

    We’re a group of local WordPress developers, designers, and publishers who get together to share our knowledge, our 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: ARRIVE EARLY. PARKING IS LIMITED
    Priority parking is for the Marietta Daily Journal and members of IgniteHQ. There is a public lot a block away at the intersection of Waddell and Anderson that charges $5.

    Marietta 30060 - USA

    Thursday, January 2 at 11:30 AM

    5

    https://www.meetup.com/wpatlanta/events/262966564/

  • Marietta (Metro Atlanta) WordPress Meetup

    We’re a group of local WordPress developers, designers, and publishers who get together to share our knowledge, our 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: ARRIVE EARLY. PARKING IS LIMITED
    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 14 at 11:30 AM

    7

    https://www.meetup.com/wpatlanta/events/262966590/

  • Marietta (Metro Atlanta) WordPress Meetup

    Topic To Be Determined

    We’re a group of local WordPress developers, designers, and publishers who get together to share our knowledge, our 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: ARRIVE EARLY. PARKING IS LIMITED
    Priority parking is for the Marietta Daily Journal and members of IgniteHQ. There is a public lot a block away at the intersection of Waddell and Anderson that charges $5.

    Marietta, GA 30060 - USA

    Thursday, February 6 at 11:30 AM

    1

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