Funny you should mention that. Tonight I went straight from my electrolysis appointment to the club for an Aqua class. Got there, grabbed a locker and dropped a few after-class items in it. Then went to the restroom and changed into my swim suit. No problems at all. And, i have seen other women using he restroom stalls to change in, too.
Also had a lovely chat with another class member after we were both out of the showers and changed in the locker room. I’m not sure I’ve seen her there before, but she asked me a question to start it out.
Again, I use the showers after the Aqua class, since I’m wet and covered in pool water (chlorine and saline that I’d just as soon get off now vs later). After the rest of the classes and workouts, I do go home to shower. And that seems common from what I’ve noticed of the other women, too.