Pre reno - they allowed swimming in the sports pool until the wee hours of the morning. Post reno there is no sports pool. I think it is fair to say that the fact that one of the pools or the jacuzzi near Bash are not open late is one of the biggest complaints about the resort post reno. Perhaps one day management will make a change, but so far, there is no indication that will happen.
Nope, there are no longer night swimming options. Yes, get a jacuzzi if you like the late night, post Bash drinking/chilling in hot tub scene