What exactly are these rules, guidelines, or whatever it is that you call them?
The general "rule" is to always consider others, dress and behave as a lady or gentleman (whichever you prefer at the time) and use public restrooms appropriately and discreetly. "Have fun, but don't have your fun at the expense of others!"
A good "In A Nutshell" summary of our Behavior, Dress, and Restroom Guidelines appears HERE and contains links to more detailed information toward the end of the page.
Next FAQ entry (13.06): What is the legal status regarding public restrooms in the Las Vegas area?