I used to go to a gym where there was repeatedly bad behaviour in the saunas and steam rooms, ranging from men who'd stretch out and take up all the bench space (and refuse to budge up if it got busier) to men (it was ALWAYS men) who'd insist on pouring aromatherapy oil into the filters which promptly bunged them up and took the whole facility out of service. One did it in front of me once - despite a sign on the door prohibiting it - and when I asked him not to he told me to fuck off. And that's before the leering and comments, and the shit behaviour in the pool itself - thankfully it was few and far between but it did happen, particularly when there were big groups of men in who were guests. The staff were generally rubbish at dealing with it, they didn't want to confront a paying customer. They also tended to be quite young so just didn't have the confidence and/or skills to deal with situations.
I now go to a gym where bad behaviour simply is not tolerated and memberships are terminated for breaching codes of conduct. So it can be done.
DL need to be addressing the bad behaviour not taking facilities out of use instead. If I was paying DL prices I'd be as pissed off as hell to find them out of bounds in peak hours.