In fact, another tip is that as you meander along the streets, keep an eye out for the nearest McDo. Pourquoi? Three reasons:
1. One euro coffee. Sometimes you don't WANT to sit in a cafe for an hour. The coffee is surprisingly acceptable.
2. Bathrooms with toilet paper.
3. Free wi-fi (pronounced wee-fee). This is not as critical an issue as it was a few years ago, when our rentals were sometimes without wi-fi. Now many parks have free wi-fi also.
And guess what? Most of the customers are "real" French people (mostly teenagers) and not tourists.