Unlike in the picture, clubs tend to be kinda dark spots. Because they also serve alcohol, the potential for bad stuff to go down is there, for sure.
Perhaps sick of hearing me harp about learning to kick in shoes or throw other techniques in "regular clothes," Sensei S told us to not even change into our gis for class a few weeks ago. He lined up some chairs from the hallway, turned off all but the disco ball/strobe light in the studio used during kickboxing class and had us sit down. "What would you do if you were here and someone made unwanted advances?" he asked. When trapped between the wall and the "offender" (which was Sensei S - and the only way "out" was through him), we all had different solutions for getting away safely - from using very dramatic physical force to the more subtle "Could you please remove your hand from my thigh?" non-confrontational approach. It was very enlightening and had us all talking about appropriate resistance for the rest of the evening.
What would YOU do to ward off unwanted advances in a dark bar or dance hall?