Some Vegas hotels have non-smoking areas. South Point just isn't one of them. You could ask the JREF to change to a venue that IS non-smoking, but part of the draw of South Point is the price.
Perhaps if other hotels have found it beneficial to have non-smoking areas, it won't take much to convince South Point that they should have a non-smoking area, too. So, my suggestion it to complain to the hotel about the smoke. And it would probably be even better if we can convince JREF bring it up with the hotel.