[andrewem]

There was probably triumphalism because in nearly all large arenas the lines for the women's room are routinely much longer than those for the men's room. So for the men at Strange Loop not having to wait was normal, but for the women at the NKOTB concert it was a highly unusual, pleasant surprise.

No, I don't have statistics to prove this, but it's been the case throughout my 30+ year life living in various places throughout the US. The only time there's typically a longer men's room line in my life is at tech gathering, and it's usually still not the kind of wait where people give up, as often happens to women I know.