More of my humble--very humble--tips. I am a caffeine addict. In Nantes five years ago I had a wee meltdown. We stopped for some mediocre espresso to revive me (Mr FS has a lot of stamina so I drank most of his).
Next time I was on the verge, Mr FS whipped out a surprise: a small baggie of instant coffee. He mixed some in an empty water bottle with the water we always carry and, you know, it was pretty good. It averted the meltdown. He is a genius.
We refined the lifesaver by adding some of the schoolboy (petit ecolier) cookies you find all over France.* These are a chocolate topped square cookie embossed with a schoolboy. Caffeine plus a hit of that dark chocolate. Instant revival.
We sometimes eat them in a quiet corner of the Louvre, breaking the rules. SHHHHH.
Speaking of the Louvre, we always carry some toilet paper. Even in that august institution, one often finds empty toilet paper rolls. Last year, an American woman peered in the stall and lamented the fact that there was NO TOILET PAPER. I gave her some of my stash. She was very admiring of my savvy.
The gray bathrooms in the streets are often similarly paper-less. Miss Em and I once improved international relations by handing some tp to a Russian woman who spoke no English or French. We also prevented her from entering as we exited, thereby saving her the shock of being sprayed with water by the automatic cleaning. Her rather scary looking male companion got kind of angry at us, but we managed to explain with gestures why she needed to let the door close.
So my lifesavers are instant coffee, schoolboy cookies, and toilet paper.
And a question: why is it that in the US the default color for toilet paper is white while in France it is pink?
*Newsflash! You can get the cookies at Walmart and on Amazon! I don't think I want to eat them outside of France.