They are seen driving in their boat car. They gather regularly at their choir studio that looks much like a small church. After all of their practices, they have a season of performances at their usual open-air concert hall in Bikini Bottom.
In the episode "Choir Boys," they are first seen on a picture wearing different clothes that are the same as the clothes that Squidward wore. Also, they did not wear shirts in that episode, unlike Squidward.