a few were in hotels, so kinda like these photos in the Ritz-Carlton downtown:
https://www.partyslate.com/venues/the-ritz-carlton-atlanta
Or at the Fox
https://www.foxtheatre.org/explore-spaces-at-the-fox
Basically big rooms with a bunch of tables set up, some mix of carpet and dancefloor, and maybe a dais
They tended to have extensive catering, unlike say at the VFW hall