Everything is a suggestion. As long as you look like you belong, nobody will stop you 95% of the time.

Best clothing for this is not a tux, it's a yellow workman's jacket.

It depends on the occasion, but yes, bonus if you appear to work there.

My favorite place to go is the women's bathroom. They always have soap, paper towels and usually something like hair gel or other amenities. Men's bathrooms have nothing, plus women are cool about it.

When my gym was doing some building work, men and women swapped changing rooms (all the builders were men) and I was amazed at how clean, spacious, and well-appointed theirs was. You know they even have individual shower cubicles, not just a big open space with shower heads hanging from the ceiling? Luxury!

I'm guessing you didn't miss the black broth either.

We have one on campus with a couch.

Couches are standard issue in women's bathrooms. They're pretty darn handy if you're breastfeeding.

And the reverse is that if there is a line to the women's bathroom, use the men's.

I never understood the segregated bathroom idea.

Indeed, although I'm not sure if the women would like to use the men's bathrooms. I should compare toilets next time I visit the women's (I mostly only go there to wash my hands).