I just use the facilities for which gender I am at that time and there have never been any issues.
Its a lot safer that way. I have been doing it that way long before any stupid law was enacted.
Its one of those laws that no one will follow or pay attention to anyway.
Trans people have been doing it that way longer than I have been on this planet and its never been a problem so why now?
A lot of this stems from a small group of people that don't like something so they try and ruin things for others they don't agree with.