One lane is Tony & his volunteer swimmers.
The northern 25 m is being used for easy water aerobics, being led by a loud, energetic young woman.
The east end is occupied by a large Nautilus training area. The far southern area has a kind of mezzanine with treadmills. They're all full (don't these people have jobs???), and they're looking out over the pool(s).
There's loud rock music.
Altogether, a 5-ring circus.